JEE Main 2022 Physics question
Given below are two statements: Statement I : A uniform wire of resistance 80 is cut into four equal parts. These parts are now connected in parallel. The equivalence resistance of the combination will be 5 . 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.
Answer: (3)
Solution
Each of the four parts has resistance 80/4 = 20 , and four such parts in parallel give 20/4 = 5 , so Statement I is correct. For parallel resistances the same
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