
Electric current and its effects
Authored by Shivani Narang
Physics
7th Grade
Used 52+ times

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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A fuse wire is a wire of-
High resistivity and low melting point
High resistivity and high melting point
Low resistivity and low melting point
Low resistivity and high melting point
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When current is switched 'on' of a bulb it converts _______ energy into _______ energy.
Electrical, heat
Electrical, light
Electrical, mechanical
Electrical, sound
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
When current is switched on in an electric bell, it converts _______ energy into _______ energy.
Electrical, light
Electrical, sound
Electrical, heat
Mechanical, sound
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Connection of more than one device/ appliance to a single socket is called-
Overloading
Short circuit
Both
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A common household device, that do not use an electromagnet in its working, is-
The electric bell
Geyser
Telephone
Loud speaker
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The filament of A bulb, is a wire of
High resistivity, low melting point
Low resistivity, low melting point
High resistivity, high melting point
Low resistivity, high melting point
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The heating coils/elements of different electrical appliances are usually made from ________ or ________ wires.
1. Copper 2. Aluminum 3. Nichrome 4. Tungsten
1 & 2
1 & 4
2 & 4
3 & 4
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