Question

An electric lamp consumes $1000J$ of electric energy in $10second$. The power of lamp is:

• A. $10W$
• B. $50W$
• C. $100W$
• D. $1000W$

Answer 1

The correct option is C

$100W$

Step 1: Given that:

Work done$=$$1000J$

Time taken$=10second$

Step 2: Calculating power by applying formula:

The power is given as,

$Power\left(P\right)=\frac{Workdone\left(W\right)}{Timetaken\left(t\right)}$

$P=\frac{1000J}{10s}=100W$

Hence, the correct answer is option (C) i.e. $100W$