7.
In an electric bulb, a little nitrogen or argon is introduced at low pressure to
Answer : A. Cool the hot filament
8.
The nature of fuse wire is
Answer : A. high resistance and low melting point
9.
The newly discovered high temperature super conductors are
Answer : A. inorganic polymers
10.
Choke is used to
Answer : A. reduce the current in AC circuit
11.
The filament of an electric bulb is made of
Answer : A. Tungsten
12.
An electric bulb is connected to a 220 V generator. The current is 0.50 A. What is the power of the bulb?
Answer : B. 110 W