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Class-7,Electric Current and its Effects
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Q1) Electric current is the flow of
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Neutron
Positron
Electron
Proton
Q2) Which of the following materials is a conductor?
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Cloth
Rubber
Silver
Plastic
Q3) A device which prevents or allows the current to flow through it
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Switch
Terminal
Motor
Conductor
Q4) When two or more cells are joined together it forms a
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Battery
Radio
Dynamo
Transistor
Q5) Electrons are ___________ particles.
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Positively charged
Neutral
Current
Negatively charged
Q6) Electromagnet is based on
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Chemical effect of electric current
Heating effect of electric current
Magnetic effect of electric current
Electro-chemical effect of electric current
Q7) Electric current is said to be pass through a wire when
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Only proton pass through it
Only electron passes through it
No particle pass through it
Both electron and neutron pass through it
Q8) A ____________ is used in torches.
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Fuse
Generator
Secondary cell
Dry cell
Q9) MCB in electric circuit stand for
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Maximum current breaker
Miniature circuit breaker
Minimum current breaker
Molar current breaker
Q10) Electromagnet is used in
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Dry cell
Electric bell
Battery
Fuse
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