An old battery with an emf of 9V has terminal voltage of 8.2V when it is supplying a current of 2 mA. What is the internal resistance of the battery?

A 420ohm

B 400ohm

C 450ohm

D 480ohm

Solution

Correct Answer: Option B

Practice More Questions on Our App!

Download our app for free and access thousands of MCQ questions with detailed solutions