Which of the following is the cause of flow of electric current in the conductor?
Charge
Potential difference
Resistance
Power
The obstruction to the flow of electric current is called
Potential
One kilowatt is equal to
103 w
106 w
100 w
10 w
Kilowatt - hour is the unit of
Electric power
Electric energy
Name the commercial unit of electric energy.
Kilowatt hour
Joule
Watt
Erg
Which of the following characteristic is not suitable for a fuse wire?
Thin and short
Thick and short
Low melting point
Higher resistance than rest of wiring
Insulators have very high
Resistivity
Conductivity
e.m.f
Current
The fusion process can be carried out only at an extremely high temperature of the order of
107K
10-7K
1017K
10-17K
The amount of electric charge that flows through the circuit is 2.5 C and the time taken is 5 s. Find the amount current flowing ?
4 A
0.4 A
40 A
None of these
One coulomb is equivalent to
6 x 108 electrons
6 x1018 electrons
6 x 1010 electrons
6 x 1020 electrons
