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प्रश्न
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उत्तर
At constant temperature, if current is plotted against potential difference, the plot will be a straight line making some slope with the x-axis as shown in figure below:

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संबंधित प्रश्न
Why should the resistance of:
a voltmeter be very large?
Which instrument is used to measure electric current? How should it be connected in a circuit?
Define the following:
Super conductors
A strong short bar magnet is dropped into a solenoid connected to a
galvanometer as shown in fig. The galvanometer shows a deflection to the left when the current in the coil as seen from above is counter clockwise. Which one of the following shows the correct deflection of the galvanometer when the magnet is at posi tions A, Band C.

In fig. XY is at right angles to the magnetic field. The direction in which XY should be moved to induce an electron flow in the direction Y to X as indicated by the arrow is:

A bulb of 40 W is used for 12.5 h each day for 30 days. Calculate the electrical energy consumed.
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Problems for practice:
If 3A current flows through a circuit, then convert the current in terms of a milliampere.
