Back to: PRIMARY SEVEN P7 SCIENCE TOPICAL QUESTIONS AND ANSWERS
A torch is a device that uses dry cells in series arrangement to produce light

Qn. State the functions of the parts of a torch.
a) Bulb
- The bulb gives out light.
b) Switch - The switch breaks and completes the circuit at one’s will or wish. c) Dry cells
- Dry cells produce electricity.
d) Reflector - The reflector directs light into diverging beam.
e) Glass - The glass protects the reflector and bulb from damage.
f) Cover and spring - The cover and spring keep the dry cells tightly fixed and closed.
- The cover and spring complete the circuit.
Qn. Give the factors that can make a torch fail to give out light. - Poor arrangement of dry cells.
- When the cover is not fixed properly.
- When the bulb is not fixed properly.
- When some parts of a torch are spoilt / rusted.
- When the switch is faulty.
Qn. Identify the factors that can make a torch stop giving out light. - When the dry cells get used up.
- When the filament in the bulb burns out.
Types of electric circuit cells arrangement.
Qn. State the two types of electric circuit cells arrangement. - Series electric circuit cells arrangement.
- Parallel electric circuit cells arrangement.
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