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प्रश्न
A cell is used to :
विकल्प
measure current in a circuit
provide current in a circuit
check current in a circuit
prevent current in a circuit.
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उत्तर
A cell is used to : provide current in a circuit
APPEARS IN
संबंधित प्रश्न
n electrons flow through a cross section of a conductor in time t. If charge on an electron is e, then write an expression for the current in the conductor.
Write symbol and state function of following component in an electric circuit : key
Write symbol and state function of following component in an electric circuit :
voltmeter
Explain why does a metal wire when connected to a cell offer resistance to the flow of current.
How is the resistance of a wire affected if its (a) length is doubled, (b) radius is doubled?
What do you understand by the term electric current?
What do you mean by the potential difference? Write its SI unit.
State three factors on which the resistance of a wire depends. Explain, how does the resistance depend on the factors stated by you.
