One coulomb is equal to charge of electrons:
6.25x10-19
6.25x1019
6.25x1018
6.25x10-18
Power of hair dryer is:
1000 W
750 W
10 W
75 W
The value of K in SI unit is:
9X1020 Nm2C2
8X109Nm2C2
9X109Nm2C2
10X10-9 Nm2C-2
Electric field lines were introduced by:
Faraday
Newton
Coulomb
Joule
SI unit of electric intensity is:
Watt
NC-1
NS-1
Nm
If the field is stronger than lines of force are to each other:
Far away
Separated
Closer
No effect
1 volt is equal to:
JC
JC-1
JC-2
JC-3
The particles emitted from a hot cathode surface are:
Positive ions
Negative ions
Protons
Electrons
If the distance between two point charges is reduced to half, the coulomb’s force become:
Half
Two times
One fourth
Fourth times
Simplest electrical circuits use:
One wire
Two wires
Four wires
Five wires
Positive charge in an electric field always tend to move:
Does not move
From lower to higher potential
From higher to lower potential
All of these