Alternating Current

Bihar Board Class 12 · Physics · 41 past questions

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1. Q4 2026 Set A

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

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2. Q6 2025 Set D

   The peak value of an alternating current is 10 $A$. Its root mean square value will be

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3. Q11 2024 Set A

   What value of alternating current is measured by hot wire ammeter ?

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4. Q13 2024 Set A

   Mean value of alternating current in a full cycle is

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5. Q16 2024 Set A

   An alternating electric current is represented by equation $I = 0.6\sin 100\pi t$. The frequency of…

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6. Q28 2021 Set A

   The relation between r.m.s. value of alternating current ($I_{r.m.s.}$) and peak value of alternating current…

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7. Q36 2019

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

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8. Q39 2017

   If the equation of an electric current is $I = 0.6\sin 100\pi t$, the frequency of electric current is-

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9. Q41 2017

   The relation between peak current $I_0$ and root mean square current I rms is-

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