Question

Two identical heater wires are first connected in series and then in parallel what is the ratio of heat produced in the two cases

Answer 1

Answer:

Explanation:

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Answer 2

Explanation:

Let the source of v voltage.

Resistance of series connection is (R) =2R

Current(I) =v/2R

Now, Resistance in parallel (R,) = R×R/2R=R/2

Current (I,) = 2V/R

Now ratio =series/parallel= i²Rt/i²,R,t=

=(V²2Rt/4R²) ÷ (4V²Rt/2R²) =1/2× 2/4=1:4