Question

A resistance of 1kΩ has a current of 0.25A throughout it when it is connected to the terminal of a battery. What is the potential difference across the ends of a resistor?

Answer 1

Answer:

The potential difference across the resistor is 250 volts.

Explanation:

The potential difference $V$ across the ends of the resistor is given by

$V = IR$

where $I$ is the current through the resistor and $R$ is is its resistance.

Now, in our case

$R = 1.0*10^3\Omega$,

$I = 0.25 A$;

therefore, the potential across is

$V = 0.25A (1.0*10^3\Omega)$

$\boxed{V = 250volts.}$