Question

(b) Calculate the power dissipated when a speaker of 10 ohm is connected across a
source having a potential difference 3V​

Answer 1

Answer:

P = V^2 / R

P = 3^2 / 10

P = 9 / 10

P = 0.9 Watt.

Answer 2

P=V²/R

P=3²/10

P=9/10

P=0.9 watt