No, it doesn't! Ohm's Law states that 'the current passing through a conductor is proportional to the voltage applied across the ends of that conductor, providing external conditions such as temperature remain constant'. Put another way, Ohm's Law can be expressed as 'the ratio of voltage to current is constant for variations in voltage'.
In fact, very few conductors obey Ohm's Law, so that it is by no means a universal law. Those that do are called 'linear' or 'ohmic' materials, whereas those that don't are called 'non-linear' or 'non-ohmic'. Non-linear conductors include tungsten, and non-linear devices include semiconducting materials including diodes.
The ratio of voltage to current is called resistance, so you can always determine the resistance of a material, at any given voltage, by dividing that voltage by the current -whether that material obeys Ohm's Law or not.
The formula you are looking for is R = E/I
Power in a circuit is inversely proportional to the resistance, all other things being equal. Voltage equals amperes time resistances, so amperes equals voltage divided by resistance. Watts equals voltage times amperes, so watts equals voltage squared divided by resistance.
Ohm's law: Voltage equals current times resistance. 8 amperes times 24 ohms equals 192 volts.
Ohm's law: current equals voltage divided by resistance, so a 203 ohm resistor would draw 0.57 amperes from a 115 volt power supply.
10.2 kilo ohms is the resistance necessary for 1 volt to induce a current of 98.04 micro amperes. Ohm's law: voltage equals current times resistance.
The formula you are looking for is R = E/I
The current through the wire can be calculated using Ohm's Law, which states that current (I) equals voltage (V) divided by resistance (R). In this case, the current would be 90 volts divided by 30 ohms, which equals 3 amperes.
9 amperes.
Ohm's law: voltage is current times resistance. Restating this; current is voltage divided by resistance, so increasing resistance would decrease current.
Power in a circuit is inversely proportional to the resistance, all other things being equal. Voltage equals amperes time resistances, so amperes equals voltage divided by resistance. Watts equals voltage times amperes, so watts equals voltage squared divided by resistance.
2 volts across 100 kOhms produces 0.02 milliamps (or 20 microamps) of current. Ohm's law: Voltage = Amperes * Ohms, so Amperes = Voltage / Ohms.
Current is measured in amperes, or amps for short (A). One ampere equals one coulomb of charge per second.
Use the equation, V= IR from Ohm's Law V is the voltage, I is the current, and R is the resistance in ohms So then, solve the equation for I (the current) and you get I=V/R. Then just plug in the values... I= 12/3, which equals 4 A. (For current, it is measured in amperes, or just "A" as the unit.)
Ohm's law: Voltage equals current times resistance. 8 amperes times 24 ohms equals 192 volts.
Ohm's law: current equals voltage divided by resistance, so a 203 ohm resistor would draw 0.57 amperes from a 115 volt power supply.
To calculate the current, you can use the formula: Current (I) = Power (P) / Voltage (V). In this case, 60 watts divided by 120 volts equals 0.5 amperes. Therefore, a device operating at 60 watts on a 120-volt circuit would draw 0.5 amps of current.
To find the current, use Ohm's Law, which states that current (I) equals power (P) divided by voltage (V). For a 60-watt lamp connected to 120 volts, the current is calculated as follows: I = P/V = 60 watts / 120 volts = 0.5 amperes. Therefore, the current flowing through the lamp is 0.5 A.