1.
Read the Question given below
2.
A resistor of 25 cm length and 4 ohm is stretched to a uniform wire of 50 cm length. The resistance now is
3.
What is the resistance between A and B in the following circuit
4.
If length of a metallic wire becomes n times, its resistance becomes
5.
If radius of a metallic wire becomes n times, its resistance becomes
6.
What is the current (I) in the circuit?
7.
The effective resistance of a circuit containing resistances in parallel is
8.
In the circuit shown below, the ammeter A reads 5 A and the voltmeter V reads 20 V. The correct value of resistance R is
9.
If area of cross-section of a metallic wire be comes n times, its resistance becomes
10.
Read the Question given below
11.
What happens to its resistivity when some impurity is added in a conductor?
13.
How will the reading in the ammeter A be affected if another identical bulb Q is connected in parallel to P. The voltage in the mains is maintained at a constant value.
14.
A conductor behaves as superconductor
15.
A rectangular conducting cube (resistivity p) has dimensions l × b × h When current is passed through the length side, the resistance offered by the cube is
16.
If a wire of resistance 1 2 is stretched to double its length, then the resistance will become
17.
The equivalent resistance between P and Q will be
18.
If an equilateral triangle is made of a uniform wire of resistance R. the equivalent resistance between the ends of sides is
19.
Read the Question given below
20.
Which switch in the circuit when closed will produce short-circuiting?
