Question

A coil of resistance 10 \( \Omega \) is connected to a battery of 12 V. If the current flowing through the coil is 2 A, what is the power dissipated in the coil?

• A. 40 W
• B. 10 W
• C. 24 W
• D. 30 W

Hint:

To find the power dissipated in a resistor, use the formula \( P = I^2 R \). If you know the voltage and resistance, you can also use \( P = \frac{V^2}{R} \) for easier calculation.