battery is one of the source of:
heat
light
current
sound
The colour of live wire is:
Black or blue
Green or yellow
White or grey
Red or brown
The power of small fan is:
40 W
50 W
60 W
80 W
the power of washing machine is:
700 W
750 W
650 W
800 W
Watt is equal to:
Coulomb per second
Newton per second
Volt per second
Joule per second
The A.C used in Pakistan has frequency:
60 Hz
30 Hz
50 Hz
130 Hz
Total energy supplied in driving one coulomb of charge around a complete circuit is called:
Potential
Potential difference
Electromotive force
Potential energy
A digital multimeter is used to measure:
Current
Resistance
All of above
an ideal voltmeter is that which draws:
small current
no current
high current
none of these
The unit of electric power is:
Volt
Watt
Joule
Coulomb
The commercial unit of electrical energy is:
Kilowatt hour
Electron volt
Human skin, in dry conditions, has a resistance of:
20,000 ohm
100,000 ohm
30,000 ohm
2000 ohm
with the increase in temperature the resistance of pure metals:
increases
decreases
remains same
