Motor Effect

Question 1

What rule is the motor effect based on

Answer 1

a wire carrying a current will experience a force in the presence of a magnetic field

Question 2

For flemmings left hand rule what does the thumb represent

Answer 2

force direction

Question 3

For flemmings left hand rule what does the index finger represent

Answer 3

magnetic field (B) direction

Question 4

For flemings left hand rule what does the middle finger represent

Answer 4

current direction

Question 5

What is the equation to calculate strength of force on a wire

Answer 5

F = B I L

Question 6

When is the F = B I L equation applicable

Answer 6

when wire is at a right angle to magnetic field

Question 7

What is magnetic field strength measured in

Answer 7

Teslas

Question 8

From a drawing of a battery how can we tell + and - side

Answer 8

+ side is always connected to longer line of battery

• side is always connected to short fat side of battery

Question 9

In sketches when a direction is an x what does it show

Answer 9

moving away from you

Question 10

In sketches when a direction is a . what does it show

Answer 10

moving towards you