Q14 of 50 Page 380

You are given three equal resistors. The number of resistances which can be obtained by joining them is series and in parallel grouping is:

The numbers of combinations are:

1. All three in parallel


2. All three in series


3. Two in parallel and one in series


4. Two in series and one in parallel

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Two wires of the same metal have the same length, but cross-sections are in the ratio 3:1. They are joined in series. The resistance of the thicker wire is 10 Ω. The total resistance of the combination will be:

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Write true or false for the following statements:

The unit of measurement of charge is coulomb.

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Write true or false for the following statements:

A metal has a very large number of free electrons and a non-metal very less number of free electrons.