MCQ Questions for Class 10 Science: Chapter 13 Magnetic Effects of Electric Current

Students can practice the NCERT MCQ Questions for Class 10 Science Chapter 13 Magnetic Effects of Electric Current with Answers Pdf free download is available here. Revise all the concepts easily by taking help from the MCQ Questions for Class 10 Science with Answers are prepared based on the latest exam pattern. Students can refer to these Magnetic Effects of Electric Current Class 10 MCQs Questions with Answers and assess their preparation level.


Q1. Assertion: Steel core is used as an electromagnet.
Reason: Steel gets permanently magnetised when the current flows through the coil wound around.

(a) Both A and R are true and R is the correct explanation of A.
(b) Both A and R are true but R is not the correct explanation of A.
(c) A is true but R is false.
(d) A is false but R is true.
(e) Both A and R are false.

(d) A is false but R is true.


Q2. Magnetic lines of force inside current carrying solenoid are

(a) perpendicular to axis.
(b) along the axis and are parallel to each other.
(c) parallel inside the solenoid and circular at the ends.
(d) circular.

(c) parallel inside the solenoid and circular at the ends.


Q3. What should be the core of an electromagnet?

(a) soft iron
(b) hard iron
(c) rusted iron
(d) none of above

(a) soft iron


Q4. Who has stated the Right hand Thumb Rule?

(a) Orsted
(b) Fleming
(c) Einstein
(d) Maxwell

(d) Maxwell


Q5. The device used for producing electric current is called

(a) generator
(b) galvanometer
(c) ammeter
(d) motor

(a) generator


Q6. The magnetic field near a long straight wire is described by

(a) Straight field lines parallel to the wire.
(b) Straight field lines perpendicular to the wire.
(c) Connective circle centered on the wire.
(d) Radial field lines starting from the wire.

(c) Connective circle centered on the wire.


Q7. The pattern of the magnetic field produced by the straight current carrying conducting wire is

(a) in the direction opposite to the current
(b) in the direction parallel to the wire
(c) circular around the wire
(d) in the same direction of current

(a) in the direction opposite to the current


Q8. At the time of short circuit, the current in the circuit

(a) vary continuously
(b) reduced considerably
(c) increases heavily
(d) does not change

(c) increases heavily


Q9. Which of the following properties of a proton can change when it moves freely in a
magnetic field

(a) mass
(b) speed
(c) velocity
(d) momentum

(c) velocity


Q10. A positive charge is moving upwards in a magnetic field directed towards north. The particle will be deflected towards

(a) west
(b) north
(c) south
(d) east

(a) west


Q11. Electric motor converts:

(a) chemical energy into electric energy
(b) electric energy into mechanical energy
(c) mechanical energy into electric energy
(d) electric energy into chemical energy.

(b) electric energy into mechanical energy


Q12. Unit of magnetic flux is:

(a) Weber / metre2
(b) Weber
(c) Weber/metre
(d) Weber-metre2

(b) Weber


Q13. 1 Tesla is equal to:

(a) 1 Weber/m2
(b) 1 Gauss
(c) 10-4 Weber/m2
(d) 10-4 Gauss.

(a) 1 Weber/m2


Q14. If Ø = magnetic flux, B = magnetic field intensity, A = area, then the correct relationship between them is:

(a) B = Ø/A
(b) Ø = B/A
(c) A = BØ
(d) B = ØA

(a) B = Ø/A


Q15. Unit of magnetic flux is:

(a) weber
(b) weber/metre
(c) weber/metre2
(d) weber-metre

(a) weber


Q16. Unit of magnetic flux is:

(a) newton-ampere-metre
(b) newton-metre/ampere
(c) newton/ampere-metre
(d) newton-ampere/metre

(b) newton-metre/ampere


Q17. The magnitude of induced e.m.f. is:

(a) proportional to the rate of change of field lines
(b) proportional to earth’s magnetic field
(c) depend on material of coil
(d) inversely proportional to the rate of change of speed of magnet.

(a) proportional to the rate of change of field lines


Q18. Lenz’s law is based on which conservation law:

(a) charge
(b) mass
(c) momentum
(d) energy

(d) energy


Q19. The instrument which converts mechanical energy into electric energy, is:

(a) motor
(b) dynamo
(c) galvanometer
(d) transformer

(b) dynamo


Q20. Dynamo converts:

(a) chemical energy into electric energy
(b) sound energy into magnetic energy
(c) mechanical energy into electric energy
(d) mechanical energy into light energy.

(c) mechanical energy into electric energy


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