Question

The resistor $R_1$ dissipates power $P$ when connected to a generator. If a resistor $R_2$ is inserted in series with $R_1$ the power dissipated by $R_1$

• A. Increases
• B. Decreases
• C. Remains the same
• D. May decrease or increase depending on the values of $R_1 and R_2$

Answer 1

Answer: (B)

Decreases

Answer 2

$P = \frac{V^2}{R}$ . As R increases P decreases