Question

When a 40 volt of bettery is connected across an unknown resistor there is a current of 100 mA in the circuit. Find the value of resistance of the resistor

Answer 1

Answer:

The value of resistance of the resistor is 400 ohms.

Explanation:

GIVEN :

Voltage of the battery, v = 40 v.

Current in the resistor, I = 100 mA.

FORMULA :

• $\sf{R = \dfrac {v}{I}}$

SOLUTION :

• $\sf{R = \dfrac{40\:V}{10^{-1} \:A}}$

→ $\boxed{R \: = 400 \: ohms}$

$\therefore$ The value of resistance of the resistor is 400 ohms.