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Question

What are the objects that can be used in the tester instead of normal bulb to test weak conducting liquids and why?
[1 MARK]


Solution

Solution: 1 Mark
The objects to be used to test weak conducting liquids are:
1) LED: It is used as it requires less electric current to glow.

2)Magnetic needle: It deflects even when a very small amount of current is flowing.

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