Latihan Sempena Hari Raya Aidilfitri

Question 1

Diagram shows a simple loudspeaker

(a) What is a Loudspeaker? (b) Explain how does a loudspeaker produce sound

Question 2

Diagram shows a simple dynamic microphone

(c) What is a microphone? (d) Explain how does the dynamic microphone uses a wire coil and magnet to create the audio signal.

Question 3

Diagram (a) and Diagram (b) show a bar magnet is pushed into a solenoid at a speed of 2 ms-1.

Diagram (a) Diagram (b)

(a) Explain why the pointer of the galvanometer deflected when the magnet is pushed into the solenoid

[4 marks](b) Explain why the deflection of the galvanometer is bigger in Diagram (b)

[4 marks](c) What will happen if the speed is increased to 3 ms-1. Explain your answer

[4marks](d) Why the direction of the current is upward as shown in the diagram? Explain

Question 4

Diagram shows a direct current generator

Explain how the above generator works to produce direct current. [4 marks]