10th Class Science MCQs

Chapter 10 Magnetic Effects of Electric Current

Topics: In the chapter Magnetic effects of Electric Current we have make the online quiz based on the following topics thermal effect of current, magnetic effect of current, direction of magnetic field, magnetic field and field lines, electro magnetic induction, electric generator.

Quiz Physics 10th

2304

Q. 1. Electric generator converts:
	Electrical energy into mechanical energy
	Mechanical energy energy into heat
	Electrical energy into chemical energy
	Mechanical energy into electrical energy

2303

Q. 2. An electric fuse in an electric circuit is used as:
	current amplifying device
	power amplifying device
	safety device
	voltage amplifying device

2295

Q. 3. The device used for producing electric current is called a
	motor
	galvanometer
	ammeter
	generator

2305

Q. 4. The phenomenon of electromagnetic induction is the process of:
	charging a sphere
	magnetic field in a solenoid
	producing cooling effect
	inducing current due to relative motion in a coil and

2306

Q. 5. Which safety device is used in domestic circuits to prevent from overloading and short-circuiting?
	Fuse
	Ammeter
	Electric motor
	Voltmeter

2298

Q. 6. ...... showed that electricity and magnetism are related phenomena.
	Flemming
	Kelvin
	Ampere
	Oersted

2301

Q. 7. The principle of an electric generator is based on:
	magnetic effect of electric current
	heating effect of electric current
	chemical effect of electric current
	electromagnetic induction

2309

Q. 8. The moving part in an electric motor is:
	armature
	permanent magnet
	split ring
	carbon brush

2308

Q. 9. The consumption of electrical energy in domestic circuits is measured by an instrument called:
	ammeter
	electric meter
	voltmeter
	none of these

2294

Q. 10. At the time of short circuit, the current in the circuit .......
	reduces substantially
	does not change
	increases heavily
	vary continuously

Magnetic Effect of Current:

When electric current is passed through a conductor then magnetic field is produced around the conductor. This effect is called magnetic effect of current

Magnetic Flux:

Number of magnetic lines of force passing through a surface, kept in a magnetic field, is called magnetic flux associated with that surface.

Electric generator is a device that transforms mechanical energy to electrical energy. It is based on the concept of electromagnetic induction. Generators are of two types.

(i) Alternating current generator (ii) Direct current generator