Physics
Grade-9
Easy
Question
Which of the following is not a requirement for a useful battery?
- It should be light and compact
- It should have a reasonable life span
- It should have a constant voltage throughout its life span
- It should supply alternating current
Hint:
A useful battery should be light and compact and must have a good shelf life. It is the one that supplies a high voltage constantly throughout its life span.
The correct answer is: It should supply alternating current
A good battery need not supply alternating current.
- A useful battery must have a good shelf life.
- It should be light and compact.
- It should also supply high voltage constantly throughout its life span.
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