Alternating Current

Bihar Board Class 12 · Physics · 41 past questions

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1. Q20 2022 Set I

   The expression for real average power in an alternating current circuit is

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2. Q21 2022 Set I

   Power factor is equal to

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3. Q22 2022 Set I

   Phase difference in $(L\text{-}R)$ circuit is

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4. Q23 2022 Set I

   Transformation ratio in transformer is

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5. Q25 2022 Set I

   Which of the following is correct for step-up transformer ?

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6. Q26 2022 Set I

   Inductive reactance for direct current is

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7. Q27 2022 Set I

   Inductive reactance is

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