Page 168 - Physics Form 5 KSSM_Neat

Activity 4.13

Aim: To study the direction of the induced current in a solenoid
Apparatus: Solenoid, bar magnet and sensitive centre-zero galvanometer or digital multimeter
Material: Connecting wires with crocodile clips
Instructions:
KEMENTERIAN PENDIDIKAN MALAYSIA
1. Set up the apparatus as shown in Figure 4.27.
Solenoid Solenoid

A S A
N

30 20 10 0 10 30 20 10 0 10
Magnet G 20 30 Magnet G 20 30

– + – +
Galvanometer Galvanometer
(a) (b)
Figure 4.27
2. Move the north pole of the bar magnet as shown in Figure 4.27(a):
(a) towards end A of the solenoid
Let’s Recall
(b) away from end A of the solenoid Let’s Recall
3. Observe the deflection of the galvanometer pointer and determine Magnetic field
the polarity of the magnetic field at end A of the solenoid. Scan produced by
the QR code for the guideline on determination of the polarity at current in a
a solenoid. solenoid
4. Move the south pole of the bar magnet as shown in Figure 4.27(b): http://bit.ly/3lfvroV
(a) towards end A of the solenoid
(b) away from end A of the solenoid
5. Observe the deflection of the galvanometer pointer and determine
the polarity of the magnetic field at end A of the solenoid.
6. Record your observations and results in Table 4.7.
Results:
Table 4.7
Direction of deflection of Magnetic polarity at
Polarity of Motion of bar magnet at
bar magnet end A of the solenoid galvanometer pointer end A of the solenoid
(to the left or to the right) (north or south)
Towards
North
Away from

Towards
South
Away from

158 LS 4.2.3