p7 the motor effect

Question 1

What is the motor effect?

Answer 1

The motor effect is the phenomenon where a current-carrying conductor experiences a force when placed in a magnetic field.

Question 2

True or False: The direction of the force on a conductor in a magnetic field can be determined using the right-hand rule.

Answer 2

True

Question 3

Fill in the blank: The force on a current-carrying conductor in a magnetic field is directly proportional to the _____ of the current.

Answer 3

magnitude

Question 4

What factors affect the size of the force experienced by a conductor in a magnetic field?

Answer 4

The size of the force is affected by the strength of the magnetic field, the amount of current flowing through the conductor, and the length of the conductor in the magnetic field.

Question 5

Which formula represents the force on a conductor in a magnetic field?

Answer 5

F = BIL sin(θ), where F is the force, B is the magnetic flux density, I is the current, L is the length of the conductor, and θ is the angle between the conductor and the magnetic field.

Question 6

What is the role of the magnetic field in the motor effect?

Answer 6

The magnetic field interacts with the magnetic field generated by the current in the conductor, resulting in a force that causes movement.

Question 7

Multiple Choice: Which of the following increases the force on a conductor in a magnetic field? A) Decreasing the current B) Increasing the magnetic field strength C) Reducing the length of the conductor

Answer 7

B) Increasing the magnetic field strength

Question 8

Short Answer: What is the right-hand rule used for in the context of the motor effect?

Answer 8

The right-hand rule is used to determine the direction of the force on a conductor, the direction of the current, and the direction of the magnetic field.

Question 9

True or False: The motor effect can only occur in a straight wire.

Answer 9

False

Question 10

What is one practical application of the motor effect?

Answer 10

One practical application of the motor effect is in electric motors, which convert electrical energy into mechanical energy.

Question 11

Fill in the blank: The angle θ in the formula F = BIL sin(θ) represents the angle between the conductor and the _____ field.

Answer 11

magnetic

Question 12

What happens to the force if the angle θ is 90 degrees?

Answer 12

If θ is 90 degrees, the force is maximized because sin(90) = 1.

Question 13

Multiple Choice: What is the unit of magnetic flux density? A) Tesla B) Newton C) Ampere

Answer 13

A) Tesla

Question 14

Short Answer: How does increasing the length of the conductor in a magnetic field affect the force experienced?

Answer 14

Increasing the length of the conductor increases the force experienced, as the force is directly proportional to the length.