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- 1. Multiple Choice
filament of a bulb is usually made up of
nickel
chromium
cobalt
tungsten
- 2. Multiple Choice
filament of a bulb should have
high melting point
low melting point
- 3. Multiple Choice
element of an electric iron is made up of
nickel
chromium
nichrome
tungsten
- 4. Multiple Choice
1.An electric current can produce
heating effect only.
chemical effect only.
magnetic effect only.
chemical, heating, and magnetic effects.
- 5. Multiple Choice
Which one of the following solutions will not conduct electricity?
lemon juice
vinegar
tap water
vegetable oil
- 6. Multiple Choice
Electroplating is based on
Chemical effect of electricity
Magnetic effect of electricity
Heating effect of electricity
Physical effect of electricity
- 7. Multiple Choice
Who was the first to observe the magnetic effect of electric current?
Faraday
Oersted
Volta
Ampere
- 8. Multiple Choice
A fuse wire is an alloy of ________ and _______ .
Steel and copper
iron and nickel
lead and tin
cobalt and iron
- 9. Multiple Choice
Full form of MCB is ?
Miniature Circuit Breaker
Minute Circuit Builder
Both of these
None of these
- 10. Multiple Choice
Our body is a _______________ of electricity ?
Conductor
Insulator
None of these
- 11. Multiple Choice
The amount of heat in a wire depends on
Length
Material
Capacity
Both length and material
All of these
- 12. Multiple Choice
The coil of wire in an electric heater is called
Component
Element
Circuit
Spring
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