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A tangent galvanometer is connected dire...

A tangent galvanometer is connected directly to an ideal battery if the number of turns in the coil is doubled the deflection will

A

increase

B

decrease

C

remain unchanged

D

either increase or decrease

Text Solution

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The correct Answer is:
C
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How does the mutual inductance of a pair of coils change when number of turns in the coils is increased?

Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . In question (i) if the input power of the transformer be 44 W, then output power is

Transformer is a device used to increase or decrease the voltage in the transmission line according to requirement, Generally the input line voltage is fed in a primary coil and the output line voltage is obtained from the terminals of another coil In an ideal transformer, the primary and secondary coils are linked is such a way that there is no loss of magnetic flux and electrical energy. In an ideal transformer, if the number of turns and input voltage across the terminals of the primary coils be N_1 and V_1 , then the output voltage at the two terminals of the secondary coil V_2=V_1.N_2/N_1 , where N_2 is the number of turns in the secondary coil . In the above mentioned transformer the input and output currents are respectively.

How does the mutual inductance of a pair of coils change when: The number of turns in each coil is decreased.

PATHFINDER-MAGNETIC EFFECT OF CURRENT AND ELECTROMAGNETISM-I,II AND III-QUESTION BANK
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  3. A tangent galvanometer is connected directly to an ideal battery if th...

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  4. If the current is doubled the deflection is also doubled in

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  6. Which one of the following is not made of soft iron?

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  7. The variation of magnetic susceptiblity (chi) with magnetising field (...

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  8. Above curie point suspceptiblity of a ferromagnetic substance becomes

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  9. A cyclotron's oscillator frequency is 10 MHz what should be the operat...

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  10. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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  11. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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  12. A circular coil of 20 turns and radius 10 cm is placed in a uniform ma...

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  13. A circular coil of 30 turns and radius is 8.0 cm carrying a current of...

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  14. A circular coil of 30 turns and radius is 8.0 cm carrying a current of...

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  15. A uniform magnetic field of 1.5T exists in a cyllinserical region of r...

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  16. A uniform magnetic field of 1.5T exists in a cyllinserical region of r...

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  17. A uniform magnetic field of 1.5T exists in a cyllinserical region of r...

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  18. A toroid has a core (nonferromagnetic) of inner radius of 25 cm and ou...

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  19. A toroid has a core (nonferromagnetic) of inner radius of 25 cm and ou...

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