Question

The voltage across a lamp is V =(6.0+_ 0.1) v and the current passing through it is ( 4+-0.2) A ? Find the power consumed?

Answer 1

"Here is the solution:

The voltage across a lamp is V = (6.0+_ 0.1) v

The current passing through it is (4+-0.2) A

By using formula, Power = V*I

P = 6*4 = 24 Watt

dP = P(dV/V + dI/I)

dP = 24*(0.1/6 + 0.2/4)

dP = 1.6

Therefore, answer:- Power consumed = (24 ± 1.6) Watt

"

Answer 2

$\Large \sf power = (24 \pm1.6) \: \: watt$