When a straight wire that carries a current is placed in a uniform magnetic field, the wire: a) does not undergo any force if the current is alternating. b) experiences no force if it is perpendicular to the field. c) experiences a certain magnetic force, regardless of its orientation in the field. d) experiences no force if it is parallel to the field.

2) A wire carries a steady current l=0.5 A in Figure. The distances are a=0.1 m, b=0.4 m, and c=0.3 m. The magnetic field is B=0.25 T. (a) Find the magnetic force. (b) Find the magnitude of the magnetic force. (c) Find the direction of the magnetic force. (sin45=cos45=0.7) B 45° :-----------

Which is not true about the magnetic field?A) When a charged particle moves parallel to the magnetic field vector, the force acting on it is nonzero.B) The magnetic force acting on a positive charge is opposite to the direction of the force acting on a negative charge moving in the same directionC) The magnetic force acts perpendicular to both the velocity vector and the magnetic field vector.D) The magnitude of the magnetic force is proportional to sinQE) The unit of magnetic field is Tesla

19 - Which is not true about the electrical force and the magnetic force? O a) The magnetic force does work by changing the position of a charged particle. O B) The electric force is always parallel to the electric field O C) The magnetic force can act on the charged particle if it is in motion. O D) The magnetic force is always perpendicular to the magnetic field. O TO) The electrical force is independent of the speed of the charged particle.

Force on a charge ‘q’ moving with a velocity ‘v’ in a magnetic field is given by F = qvB. State true or false. a) True b) False

8. A charge is moving at an angle of 30° relative to the direction of a magnetic field and experiences a magnetic force of 3.0 x 103 N. If this same charge were to move at the same velocity perpendicular to the same magnetic field what magnetic force will act on it? FL = qvB sint

Consider a magnetic force acting on an electric charge in a uniform magnetic field.  Which of the following statements are true? a) A magnetic force is exerted on a stationary electric charge in a uniform magnetic field. b) The direction of the magnetic force acting on a moving charge in a magnetic field is perpendicular to the direction of the magnetic field. c) A magnetic force is exerted on an electric charge moving through a uniform magnetic field. d) An electric charge moving parallel to a magnetic field experiences a magnetic force. e) The direction of the magnetic force acting on a moving electric charge in a magnetic field is perpendicular to the direction of motion. f) An electric charge moving perpendicular to a magnetic field experiences a magnetic force.

When neutron enters in the magnetic field (B), then it will not bend because O a. neutron has more mass O b. neutron has more speed O c. neutron has less mass O d. charge of neutron is zero

Which one of the following statements is true regarding the magnetic force on a current carrying wire. The force either parallel to the length of the wire or parallel to the magnetic field. The force is independent of the current in the wire. The force is always perpendicular to both the length of the wire and the magnetic field. The magnetic force is proportional to the speed at which the wire is moving.

In what direction is the magnetic force acting on an electron moving in the -X direction in a uniform magnetic field in the +Y direction? a) -Y Direction b) +Z Direction c) None d) -Z Direction e) +X Direction