Advertisements
Advertisements
Question
State the relation between electric current; the number of electrons moving in a circuit and time in seconds.
Advertisements
Solution
If Q is the charge (in coulombs) flowing through a conductor in time t (in seconds) such that current I flows through the conductor then
Rate of flow of charge = `"Q"/"t"`
We know the rate of flow of charge = I = Electric current.
⇒ I = `"Q"/"t"`
APPEARS IN
RELATED QUESTIONS
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.
State and define the S.I. unit of resistance.
In transferring 1.5 C charge through a wire, 9 J of work is needed. Find the potential difference across the wire.
What do you understand by the term series circuit?
What do you mean by the potential difference? Write its SI unit.
Is electric current a scalar quantity?
State the factors on which the electrical resistance of a wire depends.
