a.

High energy electromagnetic waves

b.

Protons

c.

Neutrons

d.

Streams electrons

a.

Steady voltage.

b.

High pressure

c.

Low pressure

d.

Low voltage

a.

Proportional to the velocity v only

b.

Independent of the magnitude of the charge

c.

Proportional to both the magnitude of the charge and the velocity

d.

Proportional to the magnitude of the charge only

a.

It can easily be magnetized and demagnetized

b.

It can be used for making permanent magnets

c.

It cannot retain its magnetism longer than iron

d.

It can be used for making temporary magnets