Question

Three electric bulbs of rating 60 W each are joined in series and then connected to electric means the power consumed by these three bulbs will be :- *



180 W

60 W

20 W

20/3 w​

Answer 1

$\huge{\underline{\sf Solution:-}}$

• Here We have to find Combine or Equivalent Power.

Here

• P1=60W
• P2=60W
• P3=60W

We know that

$\boxed{\sf P=P_1+P_2+P_3}$

$\\ \tt{:}\longrightarrow P=60+60+60$

$\\ \tt{:}\longrightarrow P=180W$

• Hence option a is correct.