JEE Main 2022 · 27 Jul · Shift 1 · Physics Q44

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PhysicsSingle correct+4 / -1Question 44 of 90

A direct current of 4 A and an alternating current of peak value 4 A flow through resistance of 3 Ω and 2 Ω respectively. The ratio of heat produced in the two resistances in same interval of time will be :

3:2

3:1

3:4

4:3

Answer and worked solution

Official answer: B

DC: $4^2\times3=48$ . AC: $\frac{4^2}2\times2=16$ . Ratio $3:1$ .

(B)

Topics:AC basics and RMS values Electrical power and heating

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JEE Main 2022 · 27 Jul · Shift 1, Physics question 44