The motor effect

What is the motor effect?

The motor effect occurs when a current-carrying conductor placed in a magnetic field experiences a force.

What factors affect the size of the force in the motor effect?

The size of the force depends on the current, the magnetic field strength, and the length of the conductor in the field.

What rule is used to determine the direction of the force in the motor effect?

Fleming's left-hand rule is used to determine the direction of the force.

What does each finger in Fleming's left-hand rule represent?

Thumb: direction of force, First finger: magnetic field, Second finger: current.

How is the force calculated in the motor effect?

The force is calculated using F=BIL (Force = Magnetic flux density × Current × Length of conductor).

What happens when the conductor is parallel to the magnetic field?

No force is exerted when the conductor is parallel to the magnetic field.

What happens when the current is reversed in the conductor?

The direction of the force is also reversed.

How does increasing the current affect the force?

Increasing the current increases the size of the force.

How does magnetic flux density affect the motor effect?

A stronger magnetic field (higher flux density) results in a greater force.

What is magnetic flux density?

Magnetic flux density is the strength of a magnetic field, measured in teslas (T).

Why is the motor effect important in motors?

The motor effect is the fundamental principle that allows electric motors to convert electrical energy into mechanical energy.

How can the direction of the force in a motor be changed?

The direction can be changed by reversing the current or the magnetic field.

What type of current is used in most electric motors?

Direct current (DC) is commonly used in electric motors.

What is the significance of the angle between the conductor and the magnetic field?

The force is maximum when the conductor is perpendicular to the magnetic field.

What happens to the motor effect when the current is increased?

The force increases, making the motor spin faster.