Which of the following is used to protect tall buildings from lightning?
Conductor
Insulator
Lightning conductor
Cu wire
Charge of an electron is
6.25 x 1018 C
1.602 x 1019 C
1.602 x 10-19C
6.25 x 10-18C
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 has smallest resistance
Silver
Gold
Copper
Aluminium
Which of the following is an electron bank?
Nucleus
Atom
Earth
Molecule
The unit of electric current is
Coulomb
Volt
Ampere
Watt
The law of conservation of energy is put forward by
Joule
Oersted
Nemholtz
The property of a conductor to resist the flow of charges through it is called
Resistance
Rheostat
Commutator
Voltage
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
The electricity produced on rubbing is called
Current electricity
Static electricity
Induced electricity
All the above
