Free PDF Download of CBSE Class 10 Science Chapter 13 Magnetic Effects of Electric Current Assertion Reason Questions Class 10 Science. Assertion and Reason Questions for Class 10 Science with Answers were Prepared Based on the Latest Exam Pattern. Students can solve NCERT Class 10 Science Magnetic Effects of Electric Current to know their preparation level.
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Magnetic Effects of Electric Current Class 10 Assertion Reason Questions
The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions by selecting the appropriate option given below:
(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.
Q.1. Assertion(A): The strength of an electromagnet can be increased by increasing the number of turns per unit length in a solenoid coil.
Reason (R): The strength of an electromagnet can be increased by increasing the current flowing through the solenoid.
(b) Both A and R are true but R is not the correct explanation of A.
Q.2. Assertion(A): On changing the direction of the flow of current through a straight conductor, the direction of a magnetic field around the conductor is reversed.
Reason (R): The direction of the magnetic field around a conductor can be given in accordance with the left-hand thumb rule.
(c) A is true but R is false.
Q.3. Assertion(A) : A current carrying wire deflects a magnetic needle placed near it.
Reason (R) : A magnetic field exists around a current carrying wire.
(a) Both A and R are true and R is the correct explanation of A.
Q.4. Assertion(A) : The strength of the magnetic field at the centre of a circular coil of a wire depends on the radius of the coil
Reason (R) : The strength of the magnetic field at the centre of a circular coil of a wire depends on the number of turns of the wire in the coil.
(b) Both A and R are true but R is not the correct explanation of A.
Q.5. Assertion(A) : Alternating Current is used in household supply.
Reason (R) : AC electric power can be transmitted over long distances without much loss of energy.
(a) Both A and R are true and R is the correct explanation of A.
Q.6. Assertion(A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the radius of the circular coil.
Reason (R) : Magnetic field strength is inversely proportional to the radius of the circular coil.
(d) Assertion is false but reason is true
Q.7. Assertion(A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the number of turns of the circular coil.
Reason (R) : Magnetic field strength is directly proportional to the number of turns of the circular coil.
(a) Both A and R are true and R is the correct explanation of A.
Q.8. Assertion(A) : On freely suspending a current-carrying solenoid, it comes to rest in N-S direction just like a bar magnet.
Reason (R) : One end of current carrying straight solenoid behaves as a North pole and the other end as a South pole.
(a) Both A and R are true and R is the correct explanation of A.
Q.9. Assertion(A) : The strength of the magnetic field produced at the centre of a current carrying circular coil increases on increasing the current flowing through the coil.
Reason (R) : Magnetic field strength is inversely proportional to the current flowing in the coil.
(c) A is true but R is false.
Q.10. Assertion(A) : A compass needle is placed near a current carrying wire. The deflection of the compass needle decreases when the compass needle is displaced away from the wire.
Reason (R) : Strength of a magnetic field decreases as one moves away from a current carrying conductor.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): When a current-carrying conductor is placed in a magnetic field, a force is experienced by the conductor.
Reason (R): The force experienced by the conductor is due to the interaction between the magnetic field and the magnetic field created by the current.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): The direction of the magnetic field around a straight current-carrying conductor can be determined using the right-hand thumb rule.
Reason (R): The right-hand thumb rule states that if the thumb of the right hand points in the direction of the current, the curled fingers will indicate the direction of the magnetic field lines.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): An electric motor converts electrical energy into mechanical energy.
Reason (R): An electric motor works on the principle of the magnetic effect of electric current.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Electromagnetic induction is the process of generating an electric current in a conductor by changing the magnetic field around it.
Reason (R): According to Faraday’s law of electromagnetic induction, a changing magnetic field induces an electromotive force (emf) in a conductor.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): A galvanometer can be converted into an ammeter by connecting a low resistance in parallel with it.
Reason (R): Adding a low resistance in parallel with a galvanometer reduces its effective resistance and allows it to measure higher currents.
Answer: (b) Both A and R are true but R is not the correct explanation of A.
Assertion (A): An electric generator converts mechanical energy into electrical energy.
Reason (R): An electric generator works on the principle of electromagnetic induction.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): A solenoid is a long coil of wire with numerous closely spaced turns.
Reason (R): The magnetic field inside a solenoid is strong and uniform.
(a) Both A and R are true and R is the correct explanation of A.
Assertion (A): Magnetic field lines outside a current-carrying solenoid form closed loops.
Reason (R): The magnetic field lines outside a solenoid always form closed loops due to the absence of magnetic monopoles.
Answer: (d) A is false but R is true.
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