Question

A potential difference of 250 V is applied across a resistance of 1000 m2 in an electric iron.

Find the current and heat energy produced in 12
sec.​

Answer 1

Answer: Is 750 Joule (J)

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Answer 2

Answer:

current I = 0.25 A

Heat Energy H = 750 J

Explanation:

Given

V= 250volts, R = 1000 ohms, t = 12sec

To find

current = I and Heat energy H

current I = V/R = 250/1000 = 0.25 A

H = R × t× I^2

H = 1000 × 12× 0.25 × 0.25 = 750 Joul