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प्रश्न
Name the instrument used to control the current in an electric circuit.
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उत्तर १
A rheostat is used to control current in an electric circuit.
उत्तर २
संबंधित प्रश्न
Write symbol and state function of following component in an electric circuit : key
There is a positively charged sphere A and negatively charged sphere B, such that they are brought in electrical contact by a copper wire.
Which sphere is at lower potential before electrical contact on the basis of convention?
4 × 1020 electrons flow through a circuit in 10 hours. Calculate magnitude of current. [1 e- = 1.6 × 10-19 C]
What do you understand by the term electric resistance?
State two characteristics of resistances in the series circuit.
What do you mean by the potential difference? Write its SI unit.
Compare the brightness of two 60 watt bulbs.
When they are connected in parallel.
Explain giving scientific reasons.
