Motor effect

Question 1

What is the idea of the motor effect?

Answer 1

• When a wire with current flowing through is placed in a magnetic field, it will experience a force

Question 2

Explain how the motor effect works?

Answer 2

• When current is passed through a wire, it will produce a magnetic field
• When placed inside another magnetic field, the two fields will interact, causing the wire to experience a force and move

Question 3

What is needed for the full motor effect to be experienced?

Answer 3

• The current carrying wire must be exactly perpendicular to the magnetic field it is placed in

Question 4

Flemings left hand rule

Answer 4

• Thumb: direction of force
• Index finger: direction of magnetic field
• Middle finger: direction of current

Question 5

How to calculate force of motor effect?

Answer 5

• Force (N) = magnetic flux density (T) x current (A) x length of wire (m)