Page 146 - Physics Form 5 KSSM_Neat

4.1 Force on a Current-carrying Conductor in a
Magnetic Field

Do you know that an electric train as shown in Photograph 4.1 uses a large electric motor while
a smart phone uses a small motor? The function of most electric motors is based on the effect of
a current-carrying conductor in a magnetic field.
KEMENTERIAN PENDIDIKAN MALAYSIA

SCAN ME
SCAN ME
EduwebTV:
Force on a
current-carrying
conductor

http://bit.ly/3glVNBT

Photograph 4.1 Electric train

Activity 4.1

Aim: To study the effect on a current-carrying conductor in a magnetic field
Apparatus: Low voltage direct current power supply, U-shaped steel yoke, a pair of Magnadur
magnets and retort stand
Materials: Two copper rods without insulation and copper wire (s.w.g. 20 or thicker)
without insulation
Instructions:
1. Set up the arrangement of apparatus as shown in Figure 4.1.

Retort stand Magnadur
clamp magnet
Copper rod

Steel yoke Copper
rod
Copper wire Magnadur
SCAN ME
magnet SCAN ME
Video on force

Low voltage direct
current power supply
http://bit.ly/2CSkOXF
Figure 4.1

136 LS 4.1.1