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The polarity of the induced voltage can be determined by using the left-hand generator rule
Related MCQs
Reversing the field or the current will reverse the force on the conductor
The self-inductance of the coil may be defined as equal to the e.m.f. induced in volts when the current in the circuit changes at the rate of unit Weber turns
Which circuit element(s) will oppose the change in circuit current ?
A coil is wound on iron core which carries current I. The self-induced voltage in the coil is not affected by__________?
A crack in the magnetic path of an inductor will result in__________?
The co-efficient of coupling between two air core coils depends on__________?
Current changing from 8 A to 12 A in one second induced 20 volts in a coil. The value of inductance is__________?
A coil induces 350 mV when the current changes at the rate of 1 A/s. The value of inductance is__________?
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
An average voltage 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__________?
Two 300 uH coils in series without mutual coupling have a total inductance of__________?
Which of the fpllowing inductor will have the least eddy current losses ?
A 500 turns solenoid develops an average induced voltage of 60 V. Over what time interval must a flux change of 0.06 Wb occur to produce such a voltage ?
A coil with negligible resistance has 50V across it with 10 mA. The inductive reactance is__________?
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__________?
A conductor 2 meters long moves at right angles to a magnetic field of flux density 1 tesla with a velocity of 12.5 m/s. The induced e.m.f. in the conductor will be__________?
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__________?
Lenz’s law is a consequence of the law of conservation of__________?
In case all the flux from the current in coil 1 links with coil 2, the co-efficient of coupling will be__________?
A 200 turn coil has an inductance of 12 mH. If the number of turns is increased to 400 turns, all other quantities (area, length etc.) remaining the same, the inductance will be__________?
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__________?
In case of an inductance, current is proportional to__________?
For a purely inductive circuit which of the following is true ?
An e.m.f. of 16 volts is induced in a coil of inductance 4H. The rate of change of current must be__________?
Two coils have inductances of 8 mH and 18 mH and a co-efficient of coupling of 0.5. If the two coils are connected in series aiding, the total inductance will be__________?
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__________?
Which of the following is unit of inductance ?
Which of the following circuit elements will oppose the change in circuit current ?
A laminated iron core has reduced eddy-current losses because__________?
The magnitude of the induced e.m.f. in a conductor depends on the__________?
Which of the following is not a unit of inductance ?
Mutually inductance between two magnetically-coupled coils depends on__________?
The law that the induced e.m.f. and current always oppose the cause producing them is due to__________?
If current in a conductor increases then according to Lenz’s law self-induced voltage will__________?
Air-core coils are practically free from__________?
The property of coil by which a counter e.m.f. is induced in it when the current through the coil changes is known as__________?
The direction of induced e.m.f. can be found by__________?
An open coil has__________?
The inductance of a coil will increase under all the following conditions except__________?
As per Faraday’s laws of electromagnetic induction, an e.m.f. is induced in a conductor whenever it__________?
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__________?
Both the number of turns and the core length of an inductive coil are doubled. Its self-inductance will be__________?
Higher the self-inductance of a coil__________?
Which of the following circuit element stores energy in the electromagnetic field ?
The polarity of the induced voltage can be determined by using the left-hand generator rule
A. Yes
B. No
Correct Answer:
Yes
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Last Updated:
December 16, 2018