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प्रश्न
State the conditions for the flow of charge in a circuit from one point to the other.
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उत्तर
The main condition for the flow of charge between two points is the difference in their potentials. If the potential difference is greater, a strong current flows and if both points are at the same potential, no current will flow.
संबंधित प्रश्न
Which of the following units could be used to measure electric charge?
(a) ampere
(b) joule
(c) volt
(d) coulomb
Fill in the folloing blank with suitable words:
A current is a flow of ............... .For this to happen there must be a ............... circuit.
If the charge on an electron is 1.6 × 10−19 coulombs, how many electrons should pass through a conductor in 1 second to constitute 1 ampere current?
How does the heat H produced by a current passing through a fixed resistance wire depend on magnitude of current I?
Find the potential difference required to pass a current of 0.2 A in a wire of resistance 20Ω
A cell supplies a current of 1.2 A through two 2 Ω resistors connected in parallel. When the resistors are connected in series, it supplies a current of 0.4 A. Calculate:
(i) the internal resistance and (ii) e.m.f. of the cell.
The SI unit for electric current is the coulomb.
For current to flow, one needs art open circuit.
