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प्रश्न
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उत्तर
A moving coil galvanometer can be converted into an ammeter by connecting a low resistance (called a shunt) in parallel to the galvanometer.
A moving coil galvanometer can be converted into a voltmeter by connecting a high resistance in series with the galvanometer.
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संबंधित प्रश्न
What is an electric current?
What happens to the other bulbs in a parallel circuit if one bulb blows off?
Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.
If you were going to connect two light bulbs to one battery, would you use a series or a parallel arrangement? Why? Which arrangement takes more current from the battery?
Tell the odd one out. Give a proper explanation.
Define the following:
Semiconductors
60 joules of heat was dissipated in a resistor when 20 C flowed for 5 s. Calculate:
(a) P.d. across the resistor,
(b) Resistance of the resistor, and
(c) Average power dissipated in the resistor.
Assertion (A): Electric current will not flow between two charged bodies when connected if their charges are the same.
Reason (R): Current is the rate of flow of charge.
