1
Question
An electric current of 2.0 A passes through a wire of resistance 25 Ω. How much heat will be developed in 1 minute?
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Solution
Given:
Current through the wire, i = 2 A
Resistance of the wire, R = 25 Ω
Time taken, t = 1 min = 60 s
Heat developed across the wire,
H = i2Rt
= 2 × 2 × 25 × 60
= 100 × 60 J = 6000 J
Current through the wire, i = 2 A
Resistance of the wire, R = 25 Ω
Time taken, t = 1 min = 60 s
Heat developed across the wire,
H = i2Rt
= 2 × 2 × 25 × 60
= 100 × 60 J = 6000 J
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