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Current Electricity question

2022 · Q149
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Current Electricity question

2022 · Q149

NEETPhysicsCurrent ElectricityMCQ+4 / −1

Two resistors of resistance, 100 Ω\OmegaΩ and 200 Ω\OmegaΩ are connected in parallel in an electrical circuit. The ratio of the thermal energy developed in 100 Ω\OmegaΩ to that in 200 Ω\OmegaΩ in a given time is

  1. A
    1 : 2
  2. B
    2 : 1
  3. C
    1 : 4
  4. D
    4 : 1
View written solutionFree

Correct answer: B

For parallel combination

$$P = {{{V^2}} \over R}$$

$${{{P_1}} \over {{P_2}}} = {{{R_2}} \over {{R_1}}}$$

$$ \Rightarrow {{{P_1}} \over {{P_2}}} = {{200} \over {100}} = {2 \over 1}$$

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