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What does water do to the resistance of current flow through your body?
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Does electricity shock you more when the voltage is lower?
The sensation from a shock is due to current flowing through your body, not the voltage. You can have a high voltage and low current and not get hurt. A Tesla Coil is an example. As the voltage gets lower your body still obeys Ohm's Law. Voltage = Current x Resistance. If the resistance of your body remains constant as the voltage gets lower, the current will be lower. However, there are many variables that determine the effect of a shock on your body. Variables include the type and amount of current (AC or DC) and the path the electricity takes through the body.
What happens when skin resistance is high?
High skin resistance can produce severe skin burns but prevent the current from entering the body
What does bioelectrical impedance analysis do?
Bioelectrical impedance measures the total amount of water in the body, using a special instrument that calculates the different degrees of resistance to a mild electrical current in different types of body tissue.
Which is the dangerous current?
You can't really separate them. It's the current flowing through your body that does the damage, but the value of the current depends on the voltage across your body -the higher the voltage, the higher the resulting current.
How is electric current created?
Current is the flow of electrons through a conducting substance. Each electron carries an electric charge - so as electrons pass through a substance, such as a metal, then we say an electric current (made up of the electric charges that each electron carries) passes through that substance. We measure current in amperes, often calls "amps". Voltage refers to the potential difference of the electric charge across a boundary or between two points. So if we were to have a high accumulation of electrons in one place (lets say on the ground), and not very many electrons in another place (say in a cloud), then we would say there is a potential charge, or a voltage that we can measure between those two points. Electrons repel each other, and they are attracted to areas where there is a deficiency of electrons. So the force of the electrons trying to move away from other electrons, and towards areas of fewer electrons, is the voltage, and the actual flow of these electrons is the current. Think of electricity like the water in a hose. The water pressure is the voltage - it makes the drops of water flow through the hose. As the pressure increases, so does the flow. Similarly in electricity, as the voltage increases, so does the current. Resistance, measured in ohms, measures how much a substance opposes the flow of electricity. Think of a nozzle at the end of our hose. As we open the nozzle, the resistance to the water flow goes down, and more water flows out the end of the hose. As we close the nozzle, less water flows out the end of the hose, even thought the water pressure remains the same. The same holds true in electricity - as the resistance increases, the current goes down, and as the resistance decreases, the current goes up. Some materials, like copper, have very low resistance, meaning electricity flows through it very easily, and that is why we use copper wires to carry electricity. Some materials, like plastic, has very high resistance, and that is why we use a plastic coating around the copper wire to insulate the copper, and thus keep the flow of electricity away from our body. So now we have everything we need to understand current: 1. Current is the flow of electrons through a substance. 2. Current is driven by voltage - the higher the voltage, the higher the current. 3. Current is reduced by resistance - the higher the resistance, the lower the current.
Why should we not touch electric appliances with your wet hands?
It's the electric current that hurts you, not the voltage. But the current is determined by:Current = Voltage / Resistance.Normally your skin has very high resistance; since resistance is in the denominator, this means low current.But water will lower your skin's resistance, thereby raising the amount of current flowing through your body.
In spite of having too much resistance why does current pass through the body?
Are you under the impression that water has "too much resistance" to electrical current? If so, I can't really explain this to you. The biggest substance one could point to in the human body is water. It's almost literally what a human body is made of. For this reason, human bodies conduct electricity extremely well. You're right to mention current instead of voltage. High voltage will stun you, but a few milliamps of current across your heart could easily kill you.
How does a sponge move water through its body?
The sponge uses the choanocytes to move a steady current through its body.
How far can electrical current travel through a body of water?
There is no length because as long as it is a conductor an electrical current can go through
How high is your body resistance?
Your body resistance is high- hard to push electrons through.
Does electricity shock you more when the voltage is lower?
The sensation from a shock is due to current flowing through your body, not the voltage. You can have a high voltage and low current and not get hurt. A Tesla Coil is an example. As the voltage gets lower your body still obeys Ohm's Law. Voltage = Current x Resistance. If the resistance of your body remains constant as the voltage gets lower, the current will be lower. However, there are many variables that determine the effect of a shock on your body. Variables include the type and amount of current (AC or DC) and the path the electricity takes through the body.
Why does resistance of human body decrease to electricity when body is wet?
If you increase resistance, current is restricted (river is damed up). If you decrease restistance, current flows faster (river is wide and open). With water on our skin the current can travel across our skin instead of having to move through our bodies. The current has found a new path. Not inside our bodies but outside our bodies where there is much less resistance. Which is better? A large highway with a traffic jam or the side road next to the highway with the traffice jam The side road is effected by the traffic jam, but is still faster than the highway.
Which nymph damselfly or dragonfly can move through water with less resistance?
damselfly nymph because it has a streamline body
Could five volts directly to the chest kill you?
It is the amount of 'current' that passes through the body that causes shock. 20mA is enough to kill you. That's 20 thousandths of an amp.The limit to the amount of current, is the electrical resistance of the body.The body's resistance can vary, depending on which part and whether it is damp or dry.For a given resistance, the current passing through it, is directly proportional to the voltage.The more voltage, the more current. For the required amperage (0.02A) to do likely harm, at 5 volts the resistance of the body would have to be as low as 250 ohms. (by ohms law).Skin tissue is normally several thousand Ohms.Therefore, in answer to you question, no, you wouldn't even feel it.
What part of the human body has the highest resistance to electrical current?
The Skin
Why do fishes have streamlined body?
Its an adaptation created over time in order to help them maneuver through their environment. Evolution to be frank.
Are body fluids good conductors of current?
When a current is passed through the body, the water-containing fluids primarily conduct the electrical current. Water is found both inside the cells, intracellular fluid (ICF) and outside the cells, extracellular fluid (ECF). At low frequency, current passes through the ECF space and does not penetrate the cell membrane. At high frequencies however the current passes through both the ICF and ECF...
