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A bulb is connected first with `DC` and the then `AC` of same voltage then it will shine brightly withA. `AC`B. `DC`C. Brightness will be in ratio `1//1.4`D. Equally with both |
Answer» Correct Answer - D Brightness `prop P_(consumed) prop 1/R` for Bulb, `R_(ac)=R_(dc)`, so brightness will be equal in both the cases. |
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