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संबंधित प्रश्न
What is an Ammeter? How is It Connected in a Circuit? Draw a Diagram to Illustrate Your Answer.
Distinguish between an open and a closed circuit.
What is the function of a step-up transformer?
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?
1 kWh = `(1 "volt" xx 1 "ampere" xx "_________")/1000`
______ is used to measure the electric current.
Define electric current and give its unit.
What is the SI unit for the current?
