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Question
How much heat energy is produced in 10 second in an electric iron having resistance 440 Ω, when a potential difference of 220 volt is applied across it?
How much heat energy is produced in 10 second in an electric iron having resistance 440 Ω, when a potential difference of 220 volt is applied across it?
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Solution
The correct option is A 1100 J
From ohm's law, I = V/R = 220/440 = 0.5 A
H = I2 × R × t = (0.5)2 × 440 × 10 = 1100 J
1100 J
From ohm's law, I = V/R = 220/440 = 0.5 A
H = I2 × R × t = (0.5)2 × 440 × 10 = 1100 J
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