Question

Question 9:
If the potential difference between the end of a wire of fixed resistance is doubled, by how much does the electric power increase ?

Lakhmir Singh Physics Class 10

Answer 1

The current will remain same

Answer 2

Dear Student,

◆ Answer -

Electric power will be quadrupled when we double voltage.

● Explaination -

Electric power is given by formula -

P = V²/R

When R = constant,

P ∝ V²

Given that V' = 2V,

P'/P = (V'/V)²

P'/P = (2V/V)²

P'/P = 4

P' = 4P

Therefore, power will be quadrupled on doubling potential difference.

Thanks dear...