A current of 2A is passed through a conductor of resistance 10- for 5 seconds- The heat developed is

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Heating Effect of Current

A current of ...

Question

A current of $2 A$ is passed through a conductor of resistance $10 Ω$ for $5$ seconds. The heat developed is

100 J

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50 J

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1000 J

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200 J

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Solution

The correct option is D $200 J$
Given:
Current $I = 2 A$
Resistance $R = 10 Ω$
Time $t = 5 s$

The heat developed in any electric device for a given time is given by Joule's law of heating,
$H = I^{2} R t$
$H = (2)^{2} \times 10 \times 5 = 200 J$
So, the heat developed in the conductor is $200 J .$

Hence, the correct option is (D).

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A current of 2A is passed through a conductor of resistance 10Ω for 5 seconds. The heat developed is

The correct option is D 200 JGiven:Current I=2 AResistance R=10 ΩTime t=5 sThe heat developed in any electric device for a given time is given by Joule's law of heating,H=I2RtH=(2)2×10×5=200 JSo, the heat developed in the conductor is 200 J.Hence, the correct option is (D).

A current of $2 A$ is passed through a conductor of resistance $10 Ω$ for $5$ seconds. The heat developed is