battery is one of the source of:
heat
light
current
sound
for which of following ampere second could be the unit:
energy
charge
power
diamond des not conduct electricity, because it has no:
free electrons
free protons
free neutrons
free positive charge
100x103 A= :
10-3 A
10-2 A
10 A
10-1A
The colour of live wire is:
Black or blue
Green or yellow
White or grey
Red or brown
The A.C used in Pakistan has frequency:
60 Hz
30 Hz
50 Hz
130 Hz
What is the power rating of a lamp connector to a 12 V source when it carries 2.5 A:
4.8W
14.5W
30W
60W
The unit of electric power is:
Volt
Watt
Joule
Coulomb
with the increase in temperature the resistance of pure metals:
increases
decreases
remains same
none of these
