1.
If a wire of resistance 1 : 2 is stretched to double its length, then the resistance will become
2.
What happens to its resistivity when some impurity is added in a conductor?
3.
If area of cross-section of a metallic wire be comes n times, its resistance becomes
4.
If radius of a metallic wire becomes n times, its resistance becomes
5.
The reciprocal of resistivity of a conductor is
6.
The equivalent resistance between P and Q will be
7.
What is the resistance between A and B in the following circuit
8.
A conductor behaves as superconductor
9.
Read the question given below
A resistor of 25 cm length and 4 ohm is stretched to a uniform wire of 50 cm length. The resistance now is
10.
The SI unit of specific resistance is
11.
Read the question given below
12.
Read the question given below
13.
Which switch in the circuit when closed will produce short-circuiting?
15.
Read the question given below
If an equilateral triangle is made of a uniform wire of resistance R. the equivalent resistance between the ends of sides is
17.
If length of a metallic wire becomes n times, its resistance becomes
18.
The effective resistance of a circuit containing resistances in parallel is
19.
Good conductors have many loosely bound
20.
The conductance can't be expressed in
