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If number of turns in primary and second...

If number of turns in primary and secondary coils is increased to two times each, the mutual inductance

A

four times

B

two times

C

remains same

D

sixteen times

Text Solution

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The correct Answer is:
A
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DC PANDEY ENGLISH-ELECTROMAGNETIC INDUCTION-Level 1 Objective
  1. The dimensions of self inductance are

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  2. If number of turns in primary and secondary coils is increased to two ...

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  3. Two coils carrying current in opposite direction are placed co- axiall...

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  4. A current carrying ring is placed in a horizontal plane. A charged par...

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  5. Identify the incorrect statement. Induced electric field

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  6. Two coils have a mutual inductance of 0.005 H. the current changes in ...

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  7. An inductance of 2H carries a current of 2A. To prevent sparking when ...

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  8. A conducting rod is rotated about one end in a plane perpendicular to ...

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  9. A magnet is taken towards a conducting ring in such a way that a const...

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  10. A magnetic flux through a stationary loop with a resistance R varies d...

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  11. The current i in an inductionn coil varies with time t according to th...

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  12. The network shown in the figure is a part of complete circuit. What is...

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  13. In an LC circuit the capacitor has maximum charge q0. The value of ((d...

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  14. An alternating current I in an inductance coil varies with time t acco...

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  15. A loop of area 1m^2 is placed in a magnetic field B=2T, such that plan...

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  16. A rectangular loop of sides a and b is placed in xy-placed. A uniform ...

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  17. The armature of a DC motor has 20Omega resistance. It draws a current ...

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  18. In a transformer the output current and voltage are respectively 4 A a...

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  19. When a loop moves towards a stationary magnet with speed v, the induce...

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  20. A short magnet is allowed to fall from rest along the axis of a horizo...

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