Magnetic Effects of electrict current

Who played crucial role in understanding Electromagnetism?

• Maxwell

• Hans Christian Oersted

• Fleming

• Michael Faraday

A magnetic field can exert force on a

• Moving Magnet

• Stationary magnet

• Moving charge

• All of the above

The diagram shows plotting compasses around a bar magnet.

Which of the following plotting compass needle are drawn pointing in the correct direction?

• 1 and 2 only

• 1 and 3 only

• 1, 2 ,3 only

• 4 only

An electrical fuse is based on

• Magnetic effect of current

• chemical effect of current

• heating effect of current

• None of these

Electric fittings in a house

• the live wire goes through the switch

• the neutral wire goes through the switch

• earth wire goes through the switch

• no wire goes through the switch

The magnetic field lines

• have one direction at a point

• have no physical reality

• can be used to indicate the direction of magnetic field of a point

• All of the above

The magnetic field lines due to a straight wire carrying a current are

• Straight

• Circular

• Parabolic

• Elliptical

The magnetic field inside a long solenoid carry current

• is zero

• decreases as we move towards its end

• increases as we move towards its end

• is the same at all points

which of the following is not associated with the Fleming left hand rule

• Magnetic Field

• Current

• induced current

• Motion

Moving a magnet towards a coil sets up a current in the coil circuit , as indicated by the deflection in the _____________ Needle

• Ammeter

• Voltmeter

• Galvanometer

• Compass