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Solution
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Draw the electrical symbols of the following components and state its use:
Ammeter.
The work done in moving a unit charge across two points in an electric circuit is a measure of:
(a) current
(b) potential difference
(c) resistance
(d) power
Which of the following units could be used to measure electric charge?
(a) ampere
(b) joule
(c) volt
(d) coulomb
What actually travels through the wires when you switch on a light?
Fill in the folloing blank with suitable words:
A current is a flow of ............... .For this to happen there must be a ............... circuit.
What happens to the other bulbs in a series circuit if one bulb blows off?
Complete the following sentence:
Fuse wire has a ............ Melting point and it is made of an alloy of ......... and if the current in a circuit rises too high, the fuse wire ...........
Tick(✓) the correct choice in the following:
The outer casing of an electric iron is generally connected to earth in order
to
The SI unit for electric current is the coulomb.
