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JEE MAIN 2021
31-08-21 S1
Question
A resistor dissipates 192 J of energy in 1 s when a current of 4A is passed through it. Now, when the current is doubled, the amount of thermal energy dissipated in 5 s in______J.
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Solution
E = i²Rt 192 = 16 (R) (1) R = 12 Ω E₁ = (8)² (12) (5) = 3840 J
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