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प्रश्न
How is direction of current related to the direction of flow of electrons?
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उत्तर
The direction of current is opposite to the direction of flow of electrons.
संबंधित प्रश्न
Three 2 V cells are connected in series and used as a battery in a circuit.
How many joules of electrical energy does 1 C gain on passing through (i) one cell (ii) all three cells?
If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?
Which statement/statement is/are correct?
1. An ammeter is connected in series in a circuit and a voltmeter is connected in parallel.
2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.
(a) 1, 2, 3
(b) 1, 2
(c) 2, 3
(d) 1
You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?
Find the effective resistance in the following circuit diagrams (Fig.):
A wire is passed through a piece of cardboard as shown in fig .. An electric current flows vertically down the wire and then flows back up. The two sections of the write are observed to repel each other.
(a) Wi th the aid of a diagram, describe how you would plot the magnetic field lines on the card .
(b) Sketch the magnetic field patterns around both the sections of the wire. Use your sketch to explain why the two sections repel each other.
(c) The repulsive force between the two sections is small. What changes could be made to increase it?
What is the rate at which charges flow past a point on a circuit?
