Q1: 1. What is the force experienced by a charge moving through a magnetic field called?

• A) Gravitational force
• B) Magnetic force
• C) Electric force
• D) Frictional force

Q2: 2. What is the SI unit of magnetic field intensity?

• A) Tesla
• B) Joule
• C) Watt
• D) Volt

Q3: 3. According to the right-hand rule, the direction of the magnetic force on a current-carrying wire is determined by

• A) Pointing the index finger in the direction of the current, and the thumb in the direction of the magnetic field
• B) Pointing the thumb in the direction of the current, and the index finger in the direction of the magnetic field
• C) Pointing the middle finger in the direction of the current, and the thumb in the direction of the magnetic field
• D) Pointing the thumb in the direction of the current, and the middle finger in the direction of the magnetic field

Q4: 4. What is the phenomenon where a changing magnetic field induces an electromotive force in a circuit called?

• A) Ohm's Law
• B) Faraday's Law of Electromagnetic Induction
• C) Coulomb's Law
• D) Ampere's Law

Q5: 5. Which device is used to measure the strength and direction of a magnetic field?

• A) Ammeter
• B) Voltmeter
• C) Galvanometer
• D) Magnetometer

Q6: 6. When a charged particle moves perpendicular to a uniform magnetic field, what path does it follow?

• A) Straight line
• B) Circle
• C) Parabola
• D) Hyperbola

Q7: 7. What is the relationship between the magnetic force on a current-carrying wire and the strength of the magnetic field?

• A) Directly proportional
• B) Inversely proportional
• C) No relation
• D) Exponential relation

Q8: 8. Which law states that the magnetic flux through a closed loop is directly proportional to the current passing through the loop?

• A) Gauss's Law
• B) Ampere's Law
• C) Ohm's Law
• D) Faraday's Law

Q9: 9. What is the direction of the magnetic force experienced by a negative charge moving in a magnetic field?

• A) Opposite to the direction of magnetic field
• B) Same as the direction of magnetic field
• C) Perpendicular to the direction of magnetic field
• D) No force experienced

Q10: 10. Which property of a material determines its susceptibility to becoming magnetized in a magnetic field?

• A) Permeability
• B) Conductivity
• C) Resistivity
• D) Capacitance

Q11: 11. In a cathode ray tube, the beam of electrons is deflected by a magnetic field due to

• A) Electrostatic force
• B) Magnetic force
• C) Gravitational force
• D) Nuclear force

Q12: 12. What is the SI unit of magnetic flux?

• A) Weber
• B) Coulomb
• C) Henry
• D) Tesla

Q13: 13. The force experienced by a current-carrying conductor in a magnetic field can be increased by

• A) Decreasing the length of the conductor
• B) Increasing the current in the conductor
• C) Decreasing the magnetic field strength
• D) Increasing the resistance of the conductor

Q14: 14. Which device uses the principle of electromagnetic induction to convert mechanical energy into electrical energy?

• A) Transformer
• B) Generator
• C) Capacitor
• D) Inductor

Q15: 15. The magnetic field lines outside a bar magnet

• A) Always point from north to south
• B) Always point from south to north
• C) Form closed loops
• D) Do not exist

Q16: 16. What happens to the magnetic force on a charged particle if the velocity of the particle becomes parallel to the magnetic field?

• A) Increases
• B) Decreases
• C) Remains the same
• D) Becomes zero

Q17: 17. Which law states that the induced electromotive force in a circuit is equal to the rate of change of magnetic flux through the circuit?

• A) Gauss's Law
• B) Ampere's Law
• C) Ohm's Law
• D) Faraday's Law

Q18: 18. The direction of the magnetic field lines around a current-carrying wire can be determined using

• A) Ampere's Law
• B) Ohm's Law
• C) Right-hand thumb rule
• D) Faraday's Law

Q19: 19. Which type of materials are weakly repelled by both poles of a magnet?

• A) Diamagnetic
• B) Paramagnetic
• C) Ferromagnetic
• D) Antiferromagnetic

Q20: 20. The magnetic field inside a current-carrying solenoid is

• A) Zero
• B) Uniform
• C) Non-uniform
• D) Increasing towards the ends

Q21: 21. Which phenomenon occurs when a magnetic material retains some magnetization even after the removal of an external magnetic field?

• A) Hysteresis
• B) Saturation
• C) Permeability
• D) Residual magnetism

Q22: 22. The force experienced by a current-carrying wire in a magnetic field is maximum when the angle between the wire and the magnetic field is

• A) 0 degrees
• B) 45 degrees
• C) 90 degrees
• D) 180 degrees

Q23: 23. Which law states that the magnetic field produced by a current-carrying wire is inversely proportional to the distance from the wire?

• A) Gauss's Law
• B) Ampere's Law
• C) Ohm's Law
• D) Biot-Savart Law

Q24: 24. Which parameter does not affect the strength of the magnetic field produced by a current-carrying wire?

• A) Current magnitude
• B) Distance from the wire
• C) Material of the wire
• D) Permeability of the medium

Q25: 25. What happens to the magnetic force on a current-carrying wire if the direction of the current is reversed?

• A) Increases
• B) Decreases
• C) Remains the same
• D) Reverses direction