Question

The resistance of the wire is 100 Ω. If it is carrying a current of 1 A for 10 seconds, the heat produced will be ______.

Options

• 10 J

• 10000 J

• 0.1 J

• 1000 J

Answer 1

The resistance of the wire is 100 Ω. If it is carrying a current of 1 A for 10 seconds, the heat produced will be 1000 J.

Explanation:

Given:

1. Resistance, R = 100 Ω
2. Current, I = 1 A
3. Time, t = 10 seconds

Formula for heat produced (Joule’s Law of Heating):

H = I²Rt

Substitute the values:

H = (1)² × 100 × 10

= 1000 J