Alternating Current

Bihar Board Class 12 · Physics · 41 past questions

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1. Q33 2019

   In a step-up transformer, no, of turns in primary and secondary coils are $N_1$ and $N_2$, then

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2. Q34 2019

   The power factor of L-R circuit is

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3. Q35 2019

   In an alternating current circuit, the phase difference between curren I and voltage $\phi$, then the Wattles…

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4. Q36 2019

   The ratio of root mean (rms) value and peak value of alternative current is

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5. Q38 2019

   What are reactance and impedance in alternative current circuit?

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