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Question 11
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QUESTION 11
- State three differences between main battery and back-up battery in a GSM phone.
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Though the question was fairly well attempted by some candidates. However, few candidates were able to state the features of main battery but could not state the corresponding feature of a back-up battery to distinguish between them hence they lost marks.
The expected answers are:
Any correct 3 pairs
e.g.
Main Battery Back-up Battery
 - Has voltage range between Has a voltage of 1.5V 3.6V – 4.2V
- Large in size Smaller in size
- Rechargeable Not rechargeable
- Supplies voltage for phone to keeps the memory of phone/works for
power charging or power system of phone
- Present in all phones Not in all phones |
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