MAGNETIC EFFECT OF ELECTRIC CURRENT

The magnetic field inside a long straight solenoid carry

ing current is

• Zero

• decreases as we move towards its end

• increases as we move towards its end

• the same at all points

Which of the following property of Proton can change while it moves freely in a magnetic field?

• mass

• speed

• velocity & momentum

• momentum

A negatively charged particle projected towards west is deflected towards North by a magnetic field. The direction of magnetic field is:

• Towards south

• Towards East

• Downward

• upward

Fleming left hand rule gives the direction of:

• Magnetic field

• Current

• Induced Current

• Motion (Force)

Fuse wire has high melting point. True or False:

• True

• False

• May be false

• May be correct

The magnetic field lines near a long straight wire carrying current are:

• Straight lines

• Concentric rings

• Spiral lines

• Radial lines

The device used for producing current is called a:

• Galvanometer

• Ammeter

• Motor

• Generator

Which of the following is not the source of magnetic field:

• Moving charge

• Electric current

• Magnet

• A small piece of iron

The direction of magnetic field lines inside the magnet are:

• From North to south

• From south to north

• From North to North

• From South to South

Direction of magnetic field produced by a current carrying loop can be found by using

• Fleming's Right hand rule

• Clock Rule

• Fleming's Left hand rule

• Maxwell's corkscrew rule