A current of 0.2 A is maintained in a resistor of 10 Ω. The heat produced in the resistor in 1 second is:

Correct option is D

Sol: The correct answer is (d) 0.4J

Given:

Current (I) = 0.2 A

Resistance (R) = 10 $$\Omega$$​​

Time (t) = 1 second

Formula used:

The heat produced in a resistor (H) can be calculated using the formula:

H = $$I^2Rt$$

Solution:

H = $$(0.2)^2\times10\times1$$

H= 0.04 $$\times$$ 10

H= 0.4 Joules

The heat produced in the resistor in 1 second is 0.4 joules.​