Question

If you double the voltage in a circuit and reduce the resistance by a factor of four, what will happen to the current?

OA
It will double.
B.
It will decrease by a factor of 2.
C.
It will increase by a factor of 8.
D.
It will decrease by a factor of 8.
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Answer 1

It will increase by a factor of 8.

Step-by-step explanation:

By Ohm's Law, we can relate current, voltage and resistance. It is expressed as V=IR. That is, there is a direct relationship between voltage and resistance and voltage and current.

V = IR

V1/2V1 = I1R1 / I2R1/4

1/2 = 4I1/I2

I2 = 8I1