If you replace the copper wire AB with a Nichrome wire of same length and area of cross section
What will happen to the heat produced in the conductor ? Explain with reference to Joule 's Law.

If you replace the copper wire AB with a Nichrome wire of same length and area of cross section What change would you notice in the reading on the device Q ? Why ?

The resistance .R. of a conductor depends on its length T., area of cross-section .A. and the resistivity .p. of the material. What happens to the resistance of the conductor if stretched to double its length?

What happens when the potentiometer wire Is replaced with a copper wire?

You are given a solenoid of length'l', number of turns per unit langth.'n' and area of cross section A.When a current'I' passes through it.What is the self- inductance of the solenoid?

Two wires A and B are of same metal and of the same length have their area of cross section in the ratio 2:1. If the same potential difference is applied across each wire in turn. What will be the ratio of the currents flowing in A and B.