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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
Passing through two bulbs is
difficult for electrons
easy for electrons
difficult for protons
easy for protons
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Electric Circuits and Currents
Materials that do not allow electrons to flow through them are known as
insulators
conductors
electrolytes
bases
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Electric Circuits and Currents
Electricity is formed by
positively charged ions
negatively charged ions
electrons
protons
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Electric Circuits and Currents
‘Copper’ has
low current
low voltage
low resistance
low energy
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Electric Circuits and Currents
The coil sits between the north and the south pole of the
electromagnet
permanent magnet
temporary magnet
mechanical magnet
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Electric Circuits and Currents
Compared to short thin wire of silver, the long but thin wire would have
more resistivity
less resistivity
equal resistivity
no resistivity
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Electric Circuits and Currents
When William turned the switch on, the bar of iron became a
magnet
metal
metalloid
transition metal
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Electric Circuits and Currents
Coating an object such as key or nail with a thin layer of metal is a process called
electrolysis
electro coating
electroplating
electronic induction
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Electric Circuits and Currents
The inert gas in the bulb filament is
neon
argon
xenon
radon
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Electric Circuits and Currents
The measure of energy provided by a cell is known as
voltage
resistance
current
power
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