Electromagnetic Induction and Electric Generator Quiz

Who discovered the phenomenon of electromagnetic induction?

• Michael Faraday

• James Clerk Maxwell

• Thomas Edison

• Nikola Tesla

What is the instrument used to detect the presence of current in a circuit?

• Voltmeter

• Ohmmeter

• Galvanometer

• Ammeter

What is the cause of induced electric current in a secondary coil?

• Change in voltage

• Change in temperature

• Change in resistance

• Change in magnetic field lines

What is the direction of the induced current when the motion of the coil is at right angles to the magnetic field?

• Opposite to the magnetic field

• Towards the magnetic field

• No induced current is produced

• Parallel to the magnetic field

What type of current is produced by an AC generator?

• Direct current

• Alternating current

• Variable current

• Steady current

What is the potential difference between the live and neutral wires in a domestic circuit in India?

• 440 V

• 220 V

• 660 V

• 110 V

What is the purpose of the earth wire in a domestic circuit?

• To regulate current flow

• To increase resistance

• To prevent short-circuiting

• To provide insulation

What is the function of an electric fuse in a domestic circuit?

• To control resistance

• To regulate voltage

• To prevent overloading

• To increase current flow

What occurs when the live wire and the neutral wire come into direct contact in a circuit?

• Voltage drop

• Short-circuiting

• Overloading

• Underloading

What type of current is most commonly produced by power stations in India?

• Steady current

• Variable current

• Alternating current

• Direct current