Question

The potential difference between the ends of a conductor is 40V. If the conductor draws a current of 4A from the source, what current will the conductor draw if the potential difference is increased to 100V ?

Answer 1

Given:

Voltage = 40V

Current = 4A

From Ohm's law, $V=IR$

$\therefore R=\frac{V}{I}=\frac{40}{4}=10\Omega$

When $V=100volt$ and $R=10\Omega$ we need to find the current.

Again using Ohm's law we can write, $I=\frac{V}{R}=\frac{100}{10}=10A$