1.
A resistor of 25 cm length and 4 ohm is stretched to a uniform wire of 50cm length. The resistance now is?
2.
When a body is negatively charged by friction, it means
3.
With decrease in density of the material, the resistance of the conductor
4.
The equivalent resistance between P and Q will be
5.
If I is the current though a wire and e is the charge of electron, then the number of electrons in t seconds will given by
6.
Read the Question given below
7.
In the circuit shown below, the ammeter A reads 5A and the voltmeter V reads 20V. The correct value of resistance R is
8.
How many electrons constitute a current of one microampere?
9.
The conductance can't be expressed in
10.
The SI unit of specific resistance is
11.
A suitable unit for expressing the strength of electric field is
12.
An electric charge on a body produces
13.
The reciprocal of resistivity of a conductor is
14.
Good conductors have many loosely bound
15.
If a wire of resistance 1 Ω is stretched to double its length, then the resistance will become
16.
What is the total resistance across A and B in the circuit shown in fig.
17.
What is the resistance between P and Q?
