MAGNETISM AND CAPACITORS - Quiz

1) What is the similar term in magnetic circuit for ?conductance? in electrical circuit?

Reluctivity Permeance Reluctance Permeability

2) What is the unit of Reluctance?

Weber / metre² Weber / metre Ampere turns / Weber Ampere turns / metre²

3) Which is the correct expression of capacitance C if the electric charge is Q and the voltage is V?

C = Q/V C = V/Q C = VQ C = Root of (VQ)

4) How can you increase the pulling strength of an electromagnet?

Increase the field intensity Reduce the current in the coil Reduce the number of turns in the coil Increase the B-H curve of the material

5) Which defines the flux density is always lagging behind the magnetising force?

Hysteresis Magnetic intensity Magnetic induction Residual magnetism