Question

day to day challenges of life'.
Something To Do
1.
We can make a continuity tester using the magnetic effect of current. Wrap an
electric wire few times around a compass needle box. Make a simple circuit as
shown. The free ends of the 'tester' can be put in the solution to be tested.
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This type of a tester is more sensitive as compass needle shows quite a large
deflection even for a weak current. Try repeating some of the activities using this
tester.
300
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Answer 1

Answer:

nice one!...................:)