As electrons pass through a bulb, they use
Fuses work only
When small hammer is attracted by electromagnet, the bell
William Sturgeon made first electromagnet in
The electromagnet consists of a coil of wire with
In parallel circuit, the current is
In conductors, electrons can flow because their
Poor conductor of electricity is
Earth wire is connected to the
Another example of 'electromagnets' in trains is
Turning off a switch also put the bulb off, this is because the circuit is
'Earphones' are
In 1 minute, 1kW electric fire uses 10 times as much energy as a
Electrons release energy in the form of
An instrument that gives an accurate measurement of the electric current flowing in a circuit is known as
A magnet may attract or repel by
Compared to long thick wire of copper, the short but thick wire would have
Current can only flow if there is a closed circuit
If someone carrying a knife or gun passes through a detector, it alters the rate of
Electrolysis is also used to purify
The electrolyte used in the purification of copper is
The strength of electromagnet can be increased by introducing a soft iron core
For current to flow, the circuit should be
Electric companies charge for
When the switch is turned off, the iron bar
Charges in an atom are
In our daily life, we find most of the compounds contain
A current carrying conductor has a
The more the resistors to a circuit, the
Electricity is formed by
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