Quiz : Electromagnetism

The shunt resistor is called ____.

A current-carrying coil placed in uniform magnetic field experiences maximum torque when the angle between the plane of coil and the magnetic field is ____ degrees.

When a small resistance is a connected parallel to the galvanometer, the resulting is ____.

Cathode ray oscilloscope works by deflecting a beam of ____.

The sensitivity of a galvanometer can be increased by ____.

Grid in cathode ray oscilloscope controls ____.

The brightness of the spot on the CRO screen is controlled by ____.

The magnetic force is simply a

The sensitivity of the galvanometer can be increased by:

A charge ‘q’ is placed stationary in a region where both the electric and magnetic fields are present. The. charge will experience __________.

If the current in two nearby loops is in the same order. Then:

In CRO, the time base generator circuit is connected to the_____________.

The grid in CRO___________.

Two current-carrying conductors are placed parallel to each other then____.

Electric current produces magnetic field was suggested by ____.

If the magnetic field is doubled then magnetic energy density becomes ____ times.

If the number of turns becomes double but the length remains the same, the magnetic field in the solenoid becomes ____.

The galvanometer can be made sensitive by making the factor BAN/C.

Magnetic force on a moving charged particle perpendicular to the ____.

Resistance of a voltmeter should be ____ as compared to the resistance across which it is connected.

The relation for a maximum value of deflecting couple is given by ____.