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Electric Circuits and Currents
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General Science for Class 7
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Electric Circuits and Currents
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Electric Circuits and Currents
‘Earphones’ are
magnets
small loudspeakers
soft speakers
magnetized speakers
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Electric Circuits and Currents
In walk through gates a large coil of wire carries
voltage
magnet
current
electricity
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Electric Circuits and Currents
Electroplating is used to coat less expensive metals with
gold
silver
platinum
valuable metals
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Electric Circuits and Currents
For the current to flow, each resistor in parallel circuit provides
alternate route
same route
parallel route
perpendicular route
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Electric Circuits and Currents
The loudspeaker changes the electric signals into
light waves and heat
heat and sound waves
sound waves
heat energy
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Electric Circuits and Currents
The measure of rate of flow of electric charge through an electrical conductor is known as
electric current
electrical charge
electric cell
electric circuit
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Electric Circuits and Currents
The presence of earth wire can reduce the danger of
overloading
overheating
fire
shock
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Electric Circuits and Currents
A measuring capacity of an electrical component which resists or opposes the current flow is called
resistance
circuit
ammeter
current
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Electric Circuits and Currents
If someone carrying a knife or gun passes through a detector, it alters the rate of
current
voltage
resistance
magnetic field
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Electric Circuits and Currents
A diagram drawn by using symbols which represents electrical components is called
circuit diagram
current diagram
charges diagram
electric diagram
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