18) When the distance between the turns of wire in a magnetic coil is increased then the inductance of the coil will :

increase

decrease

becomes zero

remain same

Answer is:

decrease

Alnico

Manganese

Copper

Bismuth

Answer is:

Explanation:

Alnico is having higher retentivity of magnetism.

electromagnets

permanent magnets

bar magnets

para magnets

Answer is:

Heating effect

Magnetic effect

Chemical effect

Thermal effect

Answer is:

ampere/cm square

weber/m square

ampere turns/weber

ampere/weber

Answer is:

Explanation:

Reluctance is magnetomotive force per unit flux,
So unit of reluctance = unit of MMF / unit of magnetic flux = A/Wb. = Ampere turns / Weber