Question

True orFalse?

1. Theresistance of a metal rod depends on temperature.

2. Theresistance of a metal rod does not depend onitsconductivity.

3. Theresistance of a metal rod with fixed cross-sectionalarea dependson the shape of the cross sectional area.

4. Acylindrical copper rod has resistance R. It is reformed totwiceits original length with no change of volume. Its newresistance isequal to 2R.

5. Acertain wire has a resistance R. Another wire, made of thesamematerial, has half the length and half the diameter of thefirstwire. The resistance of the second wire is equal toR.