The electric potential energy per unit charge is called:
Electric field
Electric potential
Electric intensity
All of above
Instrument used for detecting and testing the nature of charge on a body is called:
Incubator
Spectroscope
voltmeter
electroscope
Power of electric heater is:
1500W
4750W
100W
50W
the substance in which electric current flows easily is called:
transistor
semi conductor
insulator
conductor
F=
qE
q-E
q/E
q+E
If there is divergence of leaves by touching a body with electroscope then the body is:
Semi conductor
Neutral
charge body
Insulator