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In an electric motor, the direction of the force experienced by a current-carrying conductor in a magnetic field is
In an electric motor, the direction of the force experienced by a current-carrying conductor in a magnetic field is
- Perpendicular to the magnetic field lines but parallel to the wire (correct)
- Perpendicular to the wire but parallel to the magnetic field lines
- Perpendicular to both the wire and the magnetic field lines
- Parallel to both the wire and the magnetic field lines
In a simple motor, the purpose of the split-ring commutator is to
In a simple motor, the purpose of the split-ring commutator is to
- Maintain a constant direction of the magnetic field
- Increase the strength of the magnetic field
- Reduce friction between the rotating wire and the magnets
- Reverse the direction of the current in the wire as it rotates (correct)
If the strength of the magnetic field in an electric motor is increased, what happens to the force experienced by the current-carrying conductor?
If the strength of the magnetic field in an electric motor is increased, what happens to the force experienced by the current-carrying conductor?
- The force remains unchanged
- The force changes direction
- The force increases (correct)
- The force decreases
In the process of electromagnetic induction, what is induced in a wire when it moves across a magnetic field?
In the process of electromagnetic induction, what is induced in a wire when it moves across a magnetic field?
If the direction of the current in a motor is reversed, what happens to the direction of the force experienced by the current-carrying conductor?
If the direction of the current in a motor is reversed, what happens to the direction of the force experienced by the current-carrying conductor?
In the operation of a generator, what is the principle that allows the generation of an electric current?
In the operation of a generator, what is the principle that allows the generation of an electric current?
Which of the following devices utilizes the principle of electromagnetic induction to convert electrical energy into mechanical energy?
Which of the following devices utilizes the principle of electromagnetic induction to convert electrical energy into mechanical energy?
A wire carrying a current is placed perpendicular to a uniform magnetic field. The magnitude of the force acting on the wire is directly proportional to which of the following?
A wire carrying a current is placed perpendicular to a uniform magnetic field. The magnitude of the force acting on the wire is directly proportional to which of the following?
A wire carrying a current is placed perpendicular to a uniform magnetic field. If the direction of the current is reversed, the direction of the force acting on the wire will:
A wire carrying a current is placed perpendicular to a uniform magnetic field. If the direction of the current is reversed, the direction of the force acting on the wire will:
A wire is placed in a uniform magnetic field. If the current in the wire is increased, the magnitude of the electromotive force (EMF) induced in the wire will:
A wire is placed in a uniform magnetic field. If the current in the wire is increased, the magnitude of the electromotive force (EMF) induced in the wire will:
A wire is moved perpendicular to a uniform magnetic field. If the velocity of the wire is increased, the magnitude of the current induced in the wire will:
A wire is moved perpendicular to a uniform magnetic field. If the velocity of the wire is increased, the magnitude of the current induced in the wire will:
A generator converts mechanical energy into electrical energy through the principle of:
A generator converts mechanical energy into electrical energy through the principle of:
In a simple electric motor, which of the following is responsible for producing the torque that drives the rotation of the motor shaft?
In a simple electric motor, which of the following is responsible for producing the torque that drives the rotation of the motor shaft?
In a generator, what is the primary mechanism responsible for inducing an electromotive force (EMF) in the armature windings?
In a generator, what is the primary mechanism responsible for inducing an electromotive force (EMF) in the armature windings?
In a generator, what is the primary role of the commutator?
In a generator, what is the primary role of the commutator?
Which of the following statements accurately describes the relationship between the direction of the induced current and the direction of the magnetic field in a generator or motor?
Which of the following statements accurately describes the relationship between the direction of the induced current and the direction of the magnetic field in a generator or motor?
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