# Malaysia SPM Form 5 Physics - Electromagnetism

1.1 Introduction to Magnetism
1.2Straight Wire and Coil
1.3 Solenoid
1.4 Uses of Electromagnet
2.1 Catapult Force
2.2 Application of Catapult Force
3.1 Electromagnetic Induction
3.2 DC and AC Generator
4.1 Transformer
4.2 Transformer - Calculation
5.1 Generation and Transmission of electricity

# Electromagnetic Induction

The SPM Physics Workbook is developed under the One-School.net Free Books Project. The content of this book is strictly follow Malaysia SPM (Sijil Pelajaran Malaysia) syllabus. The aim of this project is to provide a complete electronic supplementary network for students to develop self-learning skills by breaking the spoon-feed rituals and to encourage them to compile educational information from the Internet.
1. Which of the following procedures will not generate e.m.f.?
Holding a magnet stationary inside a coil.
Rotating a coil in a magnetic field.
Rotating a magnet around a stationary coil.
Moving a bar magnet across a flat piece of metal.

2. An induced e.m.f. is produced when a bar magnet is pushed into a coil connected to a resistor and a galvanometer. The factors that affect the magnitude of the e.m.f. produced is discuss in
Pascal’s Law
Lenz’s Law
Maxwell’s Law

3. An induced e.m.f. is produced when a bar magnet is pushed into a coil connected to a resistor and a galvanometer. Which of the following will affect the magnitude of the induced e.m.f.?

I.  The strength of the magnet.
II  The speed of bar magnet been pushed into the coil.
III  Number of turns in the coil.
IV  Resistance of the circuit.
I and II only
I, II and III only
I, II and IV only
I, II, III and IV

4. A current is induced when a conductor is moved to cut through a magnetic filed, as shown in the diagram above. The magnitude of induced current can be increased by

I.  using a stronger magnet.
II.  moving the conductor with higher speed.
III.  put the 2 magnet closer to each other.

I and II only
II and III only
I and III only
I, II and III

5. Referring to the figure, when the conductor is moved downward, the pointer of the galvanometer will
Remain stationary
Deflect to the right
Deflect to the left
Vibrate left and right

6. Referring to the figure, when the conductor is moved to the right, the pointer of the galvanometer will
Deflect to the left
Deflect to the right
Remain stationary
Vibrate left and right

7. The figure shows the motion of a magnet and a solenoid. Among P, Q, R and S, which one will not generate e.m.f?
P
Q
R
S

8. The figure shows that a bar magnet is moved into a solenoid. What is the pole of the magnetic field of the solenoid at A?
North
South
Unable to be determined

9. Referring to the diagram. What will happen to the pointer of the galvanometer when the bar magnet is moved away from the solenoid?
Oscillating left and right
Deflect to the left
Remain stationary
Deflect to the right

10. Which of the following shows the correct direction of the induced current when a bar magnet is pushed in or pulled out from the coil?

Q and S only
P and S only