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← JEE Main 2022 · 28 Jul · Shift 2
PhysicsSingle correct+4 / -1Question 11 of 90

JEE Main 2022 · 28 Jul · Shift 2, Physics question 11

Given below are two statements :

Statement I : A uniform wire of resistance 80 Ω is cut into four equal parts. These parts are now connected in parallel. The equivalent resistance of the combination will be 5 Ω.

Statement II: Two resistances 2R and 3R are connected in parallel in a electric circuit. The value of thermal energy developed in 3R and 2R will be in the ratio 3:2.

In the light of the above statements, choose the most appropriate answer from the option given below

Choose one option
Answer and worked solution

Official answer: C

Statement I. Four 20 Ω pieces in parallel give 5 Ω. Correct.

Statement II. In parallel the heat goes as 1R\frac1R: 3R and 2R share it 2 : 3, not 3 : 2. Incorrect.

(C)