Magnetism

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Q. A charged particle moves in a magnetic field. What is the path of the particle if it enters the field perpendicularly? (2023)
  • A. Straight line
  • B. Circular path
  • C. Elliptical path
  • D. Parabolic path
Q. A charged particle moves in a magnetic field. What is the path of the particle if it enters the field perpendicular to the lines of force? (2019)
  • A. Straight line
  • B. Circular path
  • C. Elliptical path
  • D. Parabolic path
Q. A charged particle moves in a magnetic field. What is the path of the particle? (2019)
  • A. Straight line
  • B. Circular
  • C. Elliptical
  • D. Parabolic
Q. A charged particle moves perpendicular to a uniform magnetic field. What is the path of the particle? (2021)
  • A. Straight line
  • B. Circle
  • C. Ellipse
  • D. Parabola
Q. A circular loop of wire carries a current. What is the shape of the magnetic field lines around the loop? (2021)
  • A. Straight lines
  • B. Concentric circles
  • C. Ellipses
  • D. Spirals
Q. A current-carrying conductor experiences a force in a magnetic field. What is the direction of this force? (2020)
  • A. Parallel to the field
  • B. Opposite to the field
  • C. Perpendicular to both current and field
  • D. In the direction of current
Q. A current-carrying conductor experiences a force in a magnetic field. What is the direction of this force given by Fleming's left-hand rule? (2020)
  • A. Parallel to the field
  • B. Opposite to the field
  • C. Perpendicular to the field
  • D. In the direction of current
Q. A long straight wire carries a current I. What is the direction of the magnetic field at a point located directly above the wire? (2020)
  • A. Towards the wire
  • B. Away from the wire
  • C. Clockwise
  • D. Counterclockwise
Q. A loop of wire is placed in a changing magnetic field. What phenomenon occurs? (2021)
  • A. Electromagnetic induction
  • B. Magnetic resonance
  • C. Electrolysis
  • D. Magnetic levitation
Q. A magnetic field is directed into the plane of the paper. If a positive charge moves to the right, what is the direction of the magnetic force acting on it? (2021)
  • A. Upwards
  • B. Downwards
  • C. To the left
  • D. To the right
Q. A solenoid produces a magnetic field similar to that of a bar magnet. What is the main factor that affects the strength of the magnetic field in a solenoid? (2021)
  • A. Length of the solenoid
  • B. Number of turns per unit length
  • C. Material of the solenoid
  • D. Current flowing through the solenoid
Q. A solenoid produces a magnetic field similar to that of a bar magnet. What is the primary factor that determines the strength of the magnetic field in a solenoid? (2021)
  • A. Length of the solenoid
  • B. Number of turns per unit length
  • C. Material of the solenoid
  • D. Current flowing through the solenoid
Q. If the magnetic field strength is doubled, what happens to the force experienced by a current-carrying conductor? (2022)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the magnetic field strength is doubled, what happens to the force experienced by a current-carrying conductor in that field? (2022)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the magnetic field strength is doubled, what happens to the force on a current-carrying conductor in that field? (2022)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. If the magnetic field strength is doubled, what happens to the force on a current-carrying conductor? (2022)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. In a magnetic field, the force on a charged particle is maximum when the angle between the velocity and the magnetic field is: (2019)
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 45 degrees
Q. In a uniform magnetic field, a charged particle moves in a circular path. What is the relationship between the radius of the path and the speed of the particle? (2022)
  • A. Directly proportional
  • B. Inversely proportional
  • C. No relation
  • D. Quadratic relation
Q. In a uniform magnetic field, the magnetic force on a current-carrying conductor is maximum when the angle between the conductor and the field is: (2019)
  • A. 0 degrees
  • B. 90 degrees
  • C. 45 degrees
  • D. 180 degrees
Q. In which direction does the magnetic field line emerge from a bar magnet? (2022)
  • A. From North to South
  • B. From South to North
  • C. In a circular path
  • D. Randomly
Q. The force on a charged particle in a magnetic field is maximum when the angle between the velocity and the magnetic field is: (2021)
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 45 degrees
Q. The force on a charged particle moving in a magnetic field is maximum when the angle between the velocity and the magnetic field is: (2021)
  • A. 0 degrees
  • B. 90 degrees
  • C. 180 degrees
  • D. 45 degrees
Q. The force on a charged particle moving in a magnetic field is maximum when: (2021)
  • A. The particle moves parallel to the field
  • B. The particle moves perpendicular to the field
  • C. The particle is at rest
  • D. The particle moves in a circular path
Q. What happens to the magnetic field lines when a magnet is cut into two pieces? (2021)
  • A. They disappear
  • B. They become weaker
  • C. Each piece becomes a magnet with its own field
  • D. They merge into one
Q. What happens to the magnetic field strength inside a solenoid if the number of turns is increased? (2023)
  • A. It decreases
  • B. It remains the same
  • C. It increases
  • D. It becomes zero
Q. What happens to the magnetic field strength inside a solenoid if the number of turns per unit length is increased? (2023)
  • A. It decreases
  • B. It increases
  • C. It remains the same
  • D. It becomes zero
Q. What happens to the magnetic field when the current in a solenoid is reversed? (2023)
  • A. It remains the same
  • B. It disappears
  • C. It reverses direction
  • D. It doubles
Q. What happens to the magnetic field when the current in a wire is reversed? (2023)
  • A. It remains the same
  • B. It doubles
  • C. It reverses direction
  • D. It disappears
Q. What happens to the magnetic field when the distance from a long straight conductor is doubled? (2023)
  • A. It doubles
  • B. It halves
  • C. It remains the same
  • D. It quadruples
Q. What is the direction of the magnetic field around a straight conductor carrying current? (2023)
  • A. From north to south
  • B. Clockwise
  • C. Counterclockwise
  • D. Radially outward
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