The substance having infinitely high electrical resistance is called
Conductor
Resistor
Super conductor
Insulator
The electricity produced on rubbing is called
Current electricity
Static electricity
Induced electricity
All the above
Which of the following is an instrument used to detect the presence of static electricity?
Telescope
Electroscope
Galvanometer
Ammeter
Which of the following is an electron bank?
Nucleus
Atom
Earth
Molecule
Which of the following is an electrical device in which one part vibrates strongly when a current of electricity passes through it?
Volt meter
Diode
Buzzer
An electric fuse works on the
Chemical effect of current
Magnetic effect of current
Lighting effect of current
Heating effect of current
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
Which of the following has smallest resistance
Silver
Gold
Copper
Aluminium
Which of the following is the process by which an object is connected to earth so as to neutralize its charge?
Conducting
Insulating
Earthing
Heating
The unit of electric charge is
Ampere
Newton
Coulomb
Joule