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Electric Circuits and Currents
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Electric Circuits and Currents
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Electric Circuits and Currents
The volume control regulator in a CD receiver, radio and amplifier also use
transistor
variable resistor
thermistor
fixed resistor
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Electric Circuits and Currents
The scientist realized that the electric current produces
sound
current
ions
magnetism
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Electric Circuits and Currents
The name of the scientist who discovered relationship between electricity and magnetism was
Robert Hooke
Nelson Green
George Pascal
Hans Oersted
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Electric Circuits and Currents
Resistors are of
one kind
two kinds
three kinds
four kinds
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Electric Circuits and Currents
If a high current passes through someone, there will be an
electric circuit
electric current
electric energy
electric shock
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Electric Circuits and Currents
“Electrons” have
positive charge
negative charge
no charge
double charge
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Electric Circuits and Currents
The relationship between magnetism and electricity was discovered in
1818
1819
1820
1821
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Electric Circuits and Currents
In 1 minute, 1kW electric fire uses 10 times as much energy as a
1W LED light
10W LED light
100W bulb
0.1W RC Car
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Electric Circuits and Currents
Small magnets are also used in
dynamos
plugs
resistors
fuses
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Electric Circuits and Currents
Steel cans are made of
lead
tinplate
tungsten
cobalt
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