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What do the following symbols mean in circuit diagrams?
Draw circuit symbols for
fixed resistance
Explain the construction and working of the following. Draw a neat diagram and label it.
Electric motor
A battery is to be formed by joining 3 dry cells with connecting wires. Show how will you connect the wires by drawing a diagram.
In an electric circuit, a battery and a bulb have been connected and the battery consists of two cells of equal potential difference. If the bulb is not glowing, then which tests will you perform in order to find out the reason for the bulb not glowing?
Match the column ‘A’ with column ‘B’.
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Column ‘A’
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Column ‘B’ |
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(1) Eka - boron
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(a) Germanium
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(2) Eka - Aluminium
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(b) Scandium
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(3) Eka - Silicon
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(c) Gallium |
Explain the following:
Closed circuit
Assertion: People struck by lightning receive a severe electrical shock.
Reason: Lightning carries very high voltage.
State whether true or false. If false, correct the statement.
Ammeter is connected in parallel in any electric circuit.
The rate of flow of electric charges in a circuit is called ______.
