Alternating Current

Bihar Board Class 12 · Physics · 41 past questions

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1. Q1 2026 Set A

   Which quantity decreases in step-down transformer ?

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2. Q2 2026 Set A

   In an ac circuit of capacitance the current from potential difference is

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3. Q3 2026 Set A

   A capacitor is a perfect insulator for

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4. Q4 2026 Set A

   The voltage of domestic ac is 220 V. What does this represent ?

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5. Q5 2026 Set A

   Choke coil works on the principle of

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