Which of the following is/are the part/s of electric bell?
a) coil of wire
b) iron piece
c) hammer
d) all of these
Exercise:
Which of the following energy conversions takes place in a battery-operated flashlight?
a) electricalàmechanicalà light
b) chemicalà mechanicalà light
c) chemicalà electricalà light
d) nuclearàelectricalàlight
The unit of current is……
a) coulomb
b) volt
c) ohm
d) ampere
Bulb is connected to voltage source, by increasing the voltage, the brightness of the bulb will……..
a) increase
b) decrease
c) reduce to zero
d) stay the same
The primary purpose of resistor is to………
a) increase current
b) limit current
c) resist current change
d) produce heat
