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A perfect magnetic conductor is defined to be a material for which...
For making a capacitor, it is better to select a dielectric having
Determine the reluctance (in Ampturns/Wb) of a coil, when the flux through the coil is 25 Wb and the value of produced mmf is 50 Ampturns
Determine the current (in A) through a 60 cm long solenoid when the solenoid has 400 turns and the value of magnetic field at the centre of the solenoid is 6 mT.
When a dielectric is placed in an electric field, the field strength _____.
Which one of the following materials cannot be used for permanent magnets?
A conductor of length 0.6 m is situated at the right angle to a uniform magnetic field of flux density 4 Wb/sq. m. The conductor is moving with a velocity of 50 m/s. Calculate the emf induced (in V) n the conductor.
The graph shown below represents the BH curve for _______
If the magnetic susceptibility of any material is less than zero then the material is ________.
Which one of the following is the CORRECT expression for magnetic susceptibility?
What will be the voltage (in V) across a 8 H inductor, when the rate of change of current in the inductor is 0.5 A/sec.
Determine the intensity of magnetization (in A/m) of a magnet when the pole strength of the magnet is 30 Am and the area of the pole of the magnet is 2 sq. m.
Which property of a material opposes the passage of magnetic flux through it?
Determine the selfinductance (in mH) of a 3 m long aircored solenoid, when the coil has 300 turns and the diameter of the coil 12 cm.
Midway between two equal and similar charges, a third equal and similar charge is placed. Then this third charge will ________.
Which law states that “the line integral of the magnetic field intensity H around a closed path is equal to the total current linked by the contour”?
A coil of 1000 turns is wound on a core. A current of 1 A flowing through the coil creates a core flux of 1 mWb. What is the energy stored in the magnetic field?
Which one of the following is the CORRECT value of magnetic permeability in free space?
2 videos1 docs55 tests

2 videos1 docs55 tests
