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12. Electricity
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Q1 of 50 Page 381

Write true or false for the following statements:

The unit of measurement of charge is coulomb.

True

Charged is measured in coloumb.


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13

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:

14

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

2

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.

3

Write true or false for the following statements:

An electron in a metal is free to move anywhere but cannot leave the metal.

Questions · 50
12. Electricity
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