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Q1. | The magnitude of the induced e.m.f. in a conductor depends on the |

A. | flux density of the magnetic field [Wrong Answer] |

B. | amount of flux cut [Wrong Answer] |

C. | amount of flux linkages [Wrong Answer] |

D. | rate of change of flux-linkages [Correct Answer] |

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Explanation:-
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**Also Read Similar Questions Below :**

⇒ A conductor 2 metres long moves at right angles to a magnetic field of flux densit 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be

10 V

15 V

25 V

50 V

⇒ A crack in the magnetic path of an inductor will result in

unchanged inductance

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zero inductance

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⇒ The direction of induced e.m.f. can be found by

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Lenz's law

Fleming's right hand rule

Kirchhoffs voltage law

⇒ Mutually inductance between two magnetically-coupled coils depends on

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the number of their turns

cross-sectional area of their common core

all of the above

⇒ The law that the induced e.m.f. and current always oppose the cause producing them is due to

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Lenz

Newton

Coulomb

⇒ Find the force acting on a conductor 3m long carrying a current of 50 amperes at right angles to a magnetic field having a flux density of 0.67 tesla.

100 N

400 N

600 N

1000 N

⇒ For a purely inductive circuit which of the following is true ?

Apparent power is zero

Relative power is zero

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Any capacitance even if present in the circuit will not be charged

⇒ The co-efficient of coupling between two air core coils depends on

self-inductance of two coils only

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mutual inductance and self inductance of two coils

none of the above

⇒ A conductor carries 125 amperes of current under 60° to a magnetic field of 1.1 tesla. The force on the conductor will be nearly

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⇒ Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is

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⇒ An open coil has

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Henry

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300 µH

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150 µH

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⇒ A coil with negligible resistance has 50 V across it with 10 mA. The inductive reactance is

50 ohms

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5000 ohms

⇒ An averaVoltage of 10 V is induced in a 250 turns solenoid as a result of a change in flux which occurs in 0.5 second. The total flux change is

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⇒ The core of a coil has a length of 200 mm. The inductance of coil is 6 mH. If the core length is doubled, all other quantities, remaining the same, the inductance will be

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enery

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change of number of turns of coil

the resistance of magnetic path

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flux density of the magnetic field

amount of flux cut

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⇒ In case of an inductance, current is proportional to

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both (a) and (b)

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