Magnetism

Question 1

Flemming’s Left Hand rule

Answer 1

Thumb = Force (F)

Index = Magnetic field (B)

Middle = Current (I)

(FBI)

Question 1

Increasing magnetic field

Answer 1

Increase strength of magnet

Increase number of turns on the coil

Increase current in the wire

Question 2

What is a Solenoid

What is an Electromagnet

Answer 2

A coil of wire which when current passes through creates a strong magnetic field

(Electromagnet is when an iron core is added to the solenoid increasing the strength of the magnetic field)

Question 3

What happens if the current is reversed

Answer 3

The Force of the magnet reverses

Question 4

Difference between Induced and Permanent Magnet

Answer 4

Induced Magnet : Becomes magnetic when placed in a magnetic field

Permanent Magnet : Produces its own magnetic field

Question 5

Magnetic materials

Answer 5

Steel
Iron
Nickel
Colbalt

(SINC)

Question 6

Direct of Magnetic field

Answer 6

North - to - South