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संबंधित प्रश्न
What is the current in a circuit if the charge passing each point is 20 C in 40 s?
<p> Define the unit of electric current (or Define ampere).
Tell the odd one out. Give a proper explanation.
What is the purpose of fuse in an electrical circuit?
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?
Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply of the energy supplied in kWh to the three heaters in 5 hours.
What is the speed of electric current?
