Question

The voltage across a lamp is V = (6.0 + - 0.1) volt and the current passing through it I = (4+ - 0.2) ampere. Find the power consumed by the electric lamp. Given Power = V*I

Answer 1

Answer:

The power consumed by the lamp is, \bold{P=(24 \pm 1.6) W}P=(24±1.6)W

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

Explanation:

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