Question

A 25 Ω resistor has 8 A of current traveling through it. What is the voltage of the battery of the circuit?

Answer 1

Given,

The resistance of the resistor, R=25 Ω

The current travelling through the resistor, I=8 A

From Ohm's law, the voltage across a resistor is proportional to the current through the resistor.

Thus the voltage across the given resistor is,

`V=IR`

On substituting the known values,

`\begin{gathered} V=8*25 \\ =200\text{ V} \end{gathered}`

Thus the voltage of the battery of the circuit is 200 V