# Problem: A resistor is connected across an oscillating emf. The peak current through the resistor is 2.0 A. What is the peak current if: a. The resistance R is doubled?b. The peak emf ε0 is doubled?c. The frequency ω is doubled?

###### FREE Expert Solution

Peak current through the resistor is given by:

$\overline{){\mathbf{i}}{\mathbf{=}}\frac{{\mathbf{\epsilon }}_{\mathbf{0}}}{\mathbf{R}}}$

a.

From the above equation, the peak current is inversely proportional to resistance.

Therefore, if the resistance is doubled, the peak current will be halved.

###### Problem Details

A resistor is connected across an oscillating emf. The peak current through the resistor is 2.0 A. What is the peak current if:

a. The resistance R is doubled?

b. The peak emf ε0 is doubled?

c. The frequency ω is doubled?