In a nuclear reactor, the fuel is consumed at the rate of 1 mg/s. The power generated in kilowatt is

$9 × 10^4$ $9 × 10^7$ $9 × 10^8$ $9 × 10^{12}$

$9 × 10^7$

Power $P=\frac{\text { Energy }}{\text { time }}=\frac{m c^2}{t},=1 \times 10^{-6} \times(3 \times 10^8)^2$ = $9 \times 10^{10}$ W = $9 \times 10^7$ kW.