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12th Standard English Medium Physics Subject Electromagnetic Induction and Alternating Current Creative 1 Mark Questions with Solution Part - I

12th Standard

    Reg.No. :
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Physics

Time : 00:30:00 Hrs
Total Marks : 5
    5 x 1 = 5
  1. Which of the following cannot be stepped up in a transformer?

    (a)

    input current

    (b)

    input voltage

    (c)

    input power

    (d)

    all

  2. If a secondary coil has 40 turns, and a primary coil with 20 turns is charged with 50V of potential difference, then potential difference in secondary would be ________________.

    (a)

    50 V

    (b)

    25 V

    (c)

    60 V

    (d)

    100 V

  3. Which current- time graph represents the steady movement of short magnet through a coil XY?

    (a)

    (b)

    (c)

    (d)

  4. The unit of self inductance is ________________.

    (a)

    Henry

    (b)

    Ampere

    (c)

    Farad

    (d)

    Ohm

  5. The self-inductance Lof a solenoid is given as _________________.

    (a)

    \(L=\frac { { \mu }_{ o }NA }{ l } \)

    (b)

    \(L=\frac { { \mu }_{ o }{ NA }^{ 2 } }{ l } \)

    (c)

    \(L=\frac { { \mu }_{ o }{ N }^{ 2 }A }{ l } \)

    (d)

    \(L=\frac { { { \mu }_{ o }A } }{ Nl } \)

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