Question

Fir what length of time can we use a 100w bulb so as to consume just one commercial unit of energy costing rs 2

Answer 1

Verified Answer

$\sf Power = 100 W$

$\sf{Energy \: consumed = 1 \: kW/h}$

$\sf Energy \: Consumed = 3.6 \times {10}^{6} J$

$\boxed{ \rm{\purple {Power(P) = \frac{Energy \: consumed(E) }{Time \: taken(t) } }}}$

$\sf100 = \frac{3.6 \times {10}^{6} }{t}$

$\sf t = \frac{3.6 \times {10}^{6} }{100}$

$\sf t = 3.6 \times {10}^{4} \: s$

$\therefore \: \underline{ \sf{ t = 10 \: hours}}$

@BrainlyModerator