What kills people current or voltage?
Uneducated people often say "It's the current that kills, not
the voltage", but this is a myth. Current cannot flow without
voltage to push it.
While it's possible for a low voltage 12 V car battery to drive hundreds of amps of current through a wrench and cause the wrench to melt or the battery to explode, it's harmless to put your hands across the terminals of a car battery. Why? Because your skin's resistance is far higher than the wrench's. Even though car batteries can produce high current under certain conditions, it's not possible for a low voltage source to drive a high current through a human.
(That doesn't mean you shouldn't be careful around car batteries. Anything that can release large amounts of energy is dangerous, whether a current source or a voltage source, but in the case of car batteries, it's only a danger of explosions or burns; they can't harm you electrically.)
The myth may have started because static electricity (like scuffing feet across a carpet) builds up thousands of volts, and the discharge obviously isn't harmful. Again, the myth is wrong. The harmlessness of static shocks is not due to low current. They're actually relatively high current: several amps. The reason static shocks are harmless is because they are extremely short in duration. The amps of current only flow for a fraction of a microsecond, which isn't enough time to cause any damage.
The current through the heart is what kills you. It only takes a few milliamps to disrupt the heartbeat. (About 15mA for men and 10mA for women, though this varies from person to person.)
Your body has resistance, and it is very high. This is why high voltage is dangerous, low voltages cannot cause the amount of current to flow that is deadly. High voltages can. Remember ohms law here: V = IR where V is voltage, R is resistance, and I is current. What to know how much voltage will kill you? Take a ohmmeter and hold one lead in each hand, then multiply the reading by 0.025 (25mA).
Electrical burns are from power dissipation in your body. This is a product of both voltage and current. As the voltage forces the current through you, the resistance in you causes power dissipation. This power builds up has heat and burns you. Remember the formulas: P = IV and V = IR, so P = V2/R.
To summarize, current is what messes you up, and it is a function of voltage.
If getting electrocuted at 10000 volts can kill you why is it that the majority of people survive lightning strikes?
lightning is pure voltage with no current. Current is what kills you not the amount of voltage
in simple terms current kills not voltage.
They say current is what kills people and not voltage but why then in electronics does high voltage burn your components but high current does not?
This is a 'chicken and egg' situation. The current passing through your body is determined by the voltage applied across your body, together with the resistance of the current path. So whilst it is true that it is the current that harms you, the voltage has to be high enough to cause the necessary amount of current to flow. In other words, it is equally valid to say that it is the voltage level that… Read More
Neither, it is current that kills.
Its not voltage that kills it is current. High voltage CAN kill, if it can also provide high current (especially if the current comes near the heart as it takes under 1mA to stop the heart which isn't much current). However if the high voltage source is current limited and/or the current only passes through the extremities it is very unlikely to kill.
As I recall from my engineering courses, it is not the voltage that kills you but the current. So 450 Volts at a low current may not kill you.
It is not the voltage that kills you it is the amps, path of current, and the amount of time.
People have used a ballast for current regulation and you can use a breakdown diode for voltage regulation.
How much current does a flashlight use is it's batteries supply 4.5 volts and it's bulb has a resistance of 9 ohms?
Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance. Ohm's Law: Voltage = current x resistance; solving for voltage, current = voltage / resistance.
Because 120 volts is the most common voltage in use it kills more people that any other voltage in North America.
Power = (current) times (voltage) Current = (Power) divided by (voltage) Voltage = (Power) divided by (current)
Voltage = (current) x (resistance) Current = (voltage)/(resistance) Resistance = (voltage)/(current)
Because they are only touching one wire and they are not touching anything else which would provide a return path for the current back to the generator. The current is what shocks and kills, not the voltage.
You could die from less than 1 Amp, but it takes a certain voltage to "push" that much current through your body. It won't happen with a 12v car battery that can put out 100 Amps.
It isn't the voltage that kills you, its the level of amps. And it doesn't take much amps. 1/10th of an amp can do you in.
Before lightening strikes, there has to be an electric field. If you grab a live wire, the voltage of the wire creates an electric field in you which drives the current that kills you.
According to Ohm's law, voltage is the produce of current and resistance, current is the quotient of voltage and resistance, and resistance is the quotient of voltage and current.
Capacitors resist a change in voltage. It takes current to effect a voltage change, resulting in the current "leading" the voltage. Similarly, inductors resist a change in current. It takes voltage to effect a current change, resulting in the current "lagging" the voltage.
The short answer is they are not grounded. You can hang from a line also and not be harmed, but don't try it as if you do it wrong you can be severely hurt or killed. So what does "they are not grounded" mean? Electric current flows from high voltage to low voltage. The power line is high voltage. The earth, or ground, is low voltage. Anything in contact with the earth is also at… Read More
Current does not always lead voltage in AC. In a capacitative load, current will lead voltage, but in an inductive load, current will lag voltage.
Voltage attempts to make a current flow, and current will flow if the circuit is complete. It is possible to have voltage without current, but current cannot flow without voltage. The answer is "yes",voltage remains the same as current moves through the circuit.As the voltage remains constant, current increases in the circuit.
Voltage is equal to the Current multiplied by the Resistance. Without changing the resistance, increasing the applied voltage in a circuit will increase current flow. There is a simple, direct relationship between voltage and current. Double the voltage, twice the current will flow. Triple the voltage, and the current will triple. As voltage (E) equals current (I) times resistance (R), when resistance is fixed, what happens to voltage will happen to current.
Voltage = Current x Resistance giving us Current = Voltage / Resistance i.e. Voltage divided by resistance
There is no such thing as an 'induced current'. What is 'induced' is a voltage. The direction of the induced voltage is determined by the direction of the changing current that induces that voltage, because the induced voltage will always act to oppose that change in current. So, if the current is increasing, then the direction of the induced voltage will act to oppose the increase in current. If the current is decreasing, then the… Read More
A: To get voltage you must have resistance to measure across. Voltage only exists if the there is current and current and it only exists if there is voltage. To get voltage measure the resistance and divide by the current. It is a relationship called ohm laws.
Voltage is responsible for the production of current. voltage is the unit of electromotive force which gives the electrons a motion in a definite direction which we call current. voltage can exist without current(i.e. in open ckt.) but current can not without voltage.
Electric current is what flows when the voltage is applied across a resistance. Electrons flow from the negative end to the positive end. Strictly, if everything was at the same voltage no current will flow because there is no distinction, positive or negative between the ends. So people often talk more accurately of voltage difference, or potential difference.
Current = (voltage) / (resistance) Voltage = (current) x (resistance)
Power is contituted by both current and voltage So we consume both current and voltage
In a series circuit current flows through all components. Current is a measure of how many electrons flow through the circuit. The "pressure" that pushes the current is the voltage. The higher the voltage ("pressure") the higher the current. People often use an analogy of a water hose to explain it: more water pressure ("Voltage") means more water goes through the hose ("Current"). The diameter of the hose restricts the amount of water that can… Read More
Due to current.... .....but without voltage, you will not have current.... Ohms law states Voltage = resistance * current. To state "current causes shocks", implying it has nothing to do with voltage (or vice versa) is simplicitic and inaccurate.
They are not grounded or they touch only one wire, thus no current flow through 'em. Phrased another way, "It ain't the Volts that kills ya' … it's them damned Amps (current)
It is the current that kills you. Given a specific wire size the wattage that can result is larger for higher voltages because for the same current the higher voltage computes to a higher wattage since watts = volts x amps.
Ohm's law: Voltage = Amperes * Ohms If you hold one of current or voltage constant, then increasing resistance would decrease current (holding voltage), or increase voltage (holding current).
Voltage charging is when you set a specific voltage to charge a battery. Regulate voltage and the system will draw what ever current it requires. Current charging is when you force a specific current through a battery not concerned about what voltage is required to maintain the current.
The difference between a current control device and voltage controlled device is that for current controlled device, the current is constant and the voltage is variable while for a voltage controlled device, the voltage is constant and the current is variable.
AC voltage means Alternate Current Voltage DC voltage means Direct Current Voltage
In direct current the voltage and current remain the same at all times. Direct current is more efficient when traveling longer distances, but has a higher loss rate when distributing to many people and its much harder to change the voltage.
Ohm's Law: Current = Voltage times resistance, hence current is directly proportional to voltage.
Current [symbol I] = Voltage / Resistance. Also, Current = Power / Voltage.
No, There can't Be current without voltage
The current will be zero if there is no voltage.
The ratio of voltage to current is resistance.
Transistor is voltage controlled voltage device or current controlled current device or voltage controlled current device or current controlled voltage device?
transistor is a current controlled device. as the current flows through the base of the transistor , it works like a close switch.
Voltage and current are two different things. Voltage is potential energy per charge, in joules per coulomb, while current is charge transfer rate, in coulombs per second. Its that same as saying that a battery has voltage but no current, because there is no load. Well, a capacitor resists a change in voltage by requiring a current to change the voltage. Once that voltage is achieved, there is infinite resistance to the voltage, and thus… Read More
Perhaps you are asking how the voltage of alternating current is measured, to be equivalent to the voltage of a direct current system. Alternating current and direct current have distinct properties. With direct current, voltage is at a constant polarity, and a direct current voltage source will maintain a uniform, constant voltage level. Alternating current reverses polarity at a given frequency and therefore it's voltage continuously varies from a positive peak voltage level, through zero… Read More
How does the product of voltage and current in the primary compare with the product of voltage and current in the secondary?
The current in the secondary when the voltage is twice the primary will be one half of the primary. The current in the primary when the voltage is twice the secondary will be twice the secondary.
Current gain is the ratio of output current divided by input current. Voltage gain is the ratio of output voltage divided by input voltage. Nothing more complicated than that.
Because V = I x R or Voltage = Current x Resistance. Since resistance is linear there is a linear relationship between Current and voltage. If you have DC voltage you have DC current and if you have AC Voltage you have AC current. Note that there is a linguistic recognition of this relationship in that the voltage is described in terms of the current.
The unit of power is watts, the unit of current is amps, and the unit of voltage it volts. Power = Voltage X Current Voltage = Power / Current Current = Power / Voltage In electricity, power is symbolized with a P, current with an I, and voltage with a V. The real formula looks like: P = V x I V = P / I I = P / V