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Q1. | As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it |

A. | lies perpendicular to the magnetic flux [Wrong Answer] |

B. | lies in a magnetic field [Wrong Answer] |

C. | cuts magnetic flux [Correct Answer] |

D. | moves parallel to the direction of the magnetic field [Wrong Answer] |

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

⇒ In case all the flux from the current in coil 1 links with coil 2, the co-efficient of coupling will be

2.0

1.0

0.5

zero

⇒ Which of the following circuit element stores energy in the electromagnetic field?

Inductance

Condenser

Variable resistor

Resistance

⇒ Which of the following statements is cotrect ?

The inductance of the coil carrying a constant D.C. current will change the current into pulses

The inductance of the coil carrying a constant D.C. current will increase the current

The inductance of the coil carrying a constant D.C. current will not affect the current

The inductance of the coil carrying a constant D.C. current will decrease the current

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NI/Φ

NΦ/I

NI

^{2}/Φ

NΦ/I

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⇒ Two coils have self-inductances of 10 H and 2 H, the mutual inductance being zero. If the two coils are connected in series, the total inductance will be

6 H

8 H

12 H

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Henry

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Volt second per ampere

All of the above

⇒ As per Faraday's laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it

lies perpendicular to the magnetic flux

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moves parallel to the direction of the magnetic field

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lesser its weher-turns

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longer the dela' in establishing steady current through it

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charge

enery

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20 Wb

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0.2 Wb

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Ohm

Henry

Ampere turns

Webers/metre

⇒ The self inductances of two coils are 8 mH and 18 mH If the co-efficients of coupling is 0.5, the mutual inductance of the coils is

4 mH

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

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amount of flux linkages

rate of change of flux-linkages

⇒ In an iron cored coil the iron core is removed so that the coil becomes an air cored coil. The inductance of the coil will

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initially increase and then decrease

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mutual inductance

series aiding inductace

capacitance

⇒ A laminated iron core has reduced eddy-current losses because

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the laminations are insulated from each other

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the laminations are stacked vertically

⇒ In case of an inductance, current is proportional to

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⇒ 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

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15 V

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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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12 mH

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⇒ A coil is wound on iron core which carries current I. The self induced voltage in the coil is not affected by

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variation in voltage to the coil

change of number of turns of coil

the resistance of magnetic path

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cross-sectional area of their common core

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Capacitance

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