Resistors and Ohm's Law Video Lessons

Concept

Problem:  If the voltage across a circuit of constant resistance is doubled, how is the current in the circuit affected?Select one:a. The current is doubled.b. The current is reduced by a factor of 2.c. The current is quadrupled.d. The current is reduced by a factor of 4.e. The current remains constant.

FREE Expert Solution

Ohm's law:

$\overline{){\mathbf{V}}{\mathbf{=}}{\mathbf{i}}{\mathbf{R}}}$

i0 = V/R

Resistance is constant

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Problem Details

If the voltage across a circuit of constant resistance is doubled, how is the current in the circuit affected?

Select one:

a. The current is doubled.

b. The current is reduced by a factor of 2.

d. The current is reduced by a factor of 4.

e. The current remains constant.

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