In a gold leaf electroscope, its stem is made up of
wood
brass
glass
ebonite
Unit of resistance is
ohm
mho
Ampere
Volt
When length of wire increases resistance,
increases
decreases
become zero
no change
Which of the following is an example for conductor?
rubber
cotton
mercury
none of these
Which is the following is the correct expression for ohm's law.
V = IR
V = I/R
None of these
Two uncharged bodies on rubbing get charged because of
conduction
friction
induction
The velocity of light in air
3 x 108m|s
3 x 107 m|s
3.8 x 108m|s
5m|s
Which of the following is an example for secondary cell.
Leclanche cell
Dry cell
Daniel cell
NiFe
Generally connecting wires are made up of
Cu -Al
Ni -C
Tungsten