GK
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1 Ohm
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3 Ohms
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4 Ohms
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12 Ohms
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Detailed explanation-1: -4 Ohms resistor would produce a 3 amp current flow with a 12 Volt battery. Using Ohm’s law equation, the 12-ohm resistor would have a current of 1 Amp, but the 4-ohm resistor would have a current of 3 Amps.
Detailed explanation-2: -So, for a circuit with 5 ohms () of a resistance that needs 3 amp (A) of current to function, the voltage required would be 15V. The power dissipated by the circuit can also be found using the values in Ohm’s Law.
Detailed explanation-3: -An electrical device with a resistance of 3.0 will allow a current of 4.0 amps to flow through it if a voltage drop of 12 Volts is impressed across the device.
Detailed explanation-4: -Therefore, the resistance of the resistor is 4.8k. When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit.