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Physics Question Paper

Physics

Course:Secondary Level

Exam Year:2012

1. State the amperes swimming rule. (1mk)

2. Draw magnetic field patterns around a straight, current-carrying conductor. (3mks)

3. Study the figure below carefully.

a) What is the name of the device? (1mk)

b) Name parts marked (2mks)
E _______________________________________
F _______________________________________
c) On the same diagram mark the direction of force (1mk)

4. State four ways of improving the power of the above device (4mks)

5. A small electromagnet, used for lifting and then releasing a small steel ball, is made in the laboratory as shown in the figure below.

a) Explain why soft iron is a better material than steel to use for the core. (2mks)

b) In order to lift a slightly larger ball, it is necessary to make a stronger electromagnet. State two ways in which the electromagnet could be made more powerful. (2mks)

6. State Hooke’s Law

7. A spring stretches by 1.2 cm when a 600 g mass is suspended on it. What is the spring constant? (3mks)

Physics Question Paper

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