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Class 10 Science Chapter 12 Assertion and Reason Questions - Magnetic Effects of Electric Current

Q1:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Safety fuses are made up of materials having a low melting point.

Reason : Safety fuses should be resistant to electric current.

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Q2:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Copper is used to make electric wires.

Reason : Copper has very low electrical resistance.

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Q3:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : AC load line is used for long distance transmission.

Reason : It has very less loss of energy in long distance transmission.

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Q4:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : The magnitude o f the magnetic field at a point on the axis of a current carrying solenoid is inversely proportional to the current flowing through the solenoid.

Reason : The magnitude of the magnetic field at a point on the axis of a current carrying solenoid is directly proportional to the number of turns per unit length of a solenoid.

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Q5:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : The magnetic field produced by current carrying solenoid is independent of its length and cross-section area.

Reason : The magnetic field inside the solenoid is uniform.

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Q6:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion: A solenoid tends to expand, when a current passes through it.

Reason : Two straight parallel metallic wires carrying current in the same direction attract each other.

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Q7:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Force experienced by moving charge will be maximum if direction of velocity of charge is perpendicular to applied magnetic field.

Reason : Force on moving charge is independent of direction of applied magnetic field.

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Q8:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : There is no change in the energy of a charged particle moving in a magnetic field although a magnetic force is acting on it.

Reason : Work done by centripetal force is always zero.

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Q9:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : In a conductor, free electrons keep on moving but no magnetic force acts on a conductor in a magnetic field.

Reason : Force on free electrons due to magnetic field always acts perpendicular to its direction of motion.

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Q10:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : A current carrying conductor experiences a force in a magnetic field.

Reason : The force acting on a current carrying conductor in a magnetic field is due to interaction between the magnetic field produced by the current carrying conductor and the external magnetic field in which the conductor is placed.

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Q11:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : On changing the direction of flow of current through a straight conductor, the direction of a magnetic field around the conductor is reversed.

Reason : The direction of the magnetic field around a conductor can be given in accordance with the left hand thumb rule.

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Q12:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : Magnetic field lines never intersect.

Reason : At a particular point the magnetic field has only one direction.

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Q13:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : 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 : Strength of a magnetic field decreases as one moves away from a current carrying conductor.

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Q14:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : The magnetic field is stronger at a point which is nearer to the conductor and goes on decreasing on moving away from the conductor.

Reason : The magnetic field B produced by a straight current carrying wire is inversely proportional to the distance from the wire.

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Q15:

Question for Assertion & Reason Type Questions: Magnetic Effects of Current
Try yourself: Directions: In the following questions, a statement of assertion (A) is followed by a statement of reason (R). Mark the correct choice as:

Assertion : an induced current has a direction such that the magnetic flux that induces the current.

Reason : Above statement is in accordance with conservation of energy.

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