Home
About Us
Contact Us
Privacy Policy
Search
Home
→
Electromagnetic Induction
→
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______________?
Related MCQs
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 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______________?
A. 4 mH
B. 5 mH
C. 6 mH
D. 12 mH
Correct Answer:
6 mH
✔
Last Updated:
December 16, 2018