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

The potential difference across the resistor is 250 volts.

Step-by-step 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.}`