(a) The components of an electric circuit are $0.5 m$ long nichrome wire $X Y$ , an ammeter, a voltmeter, four cells of $1.5 V$ each, rheostat and a plug key. Draw a circuit diagram to study the relation between potential difference across the terminals $X$ and $Y$ of the wire and current flowing through it.
(b) State the law that relates potential difference across a conductor with the current flowing through it.

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Solution

(b) Ohm's law states that the current through a conductor between two points is directly proportional to the potential difference across the two points.

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Similar questions

Q. An electric circuit consisting of a 0.5 m long nichrome wire XY, an ammeter, a voltmeter, four cells of 1.5 V each and a plug key was set up.
(i) Draw a diagram of this electric circuit to study the relation between the potential difference maintained between the points 'X' and 'Y' and the electric current flowing through XY.
(ii) Following graph was plotted between V and I values:

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Question 22
Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 $Ω$ in series with a combination of two resistors (4 $Ω$ each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 $Ω$ resistors be the same as that across the parallel combination of 4 $Ω$ resistors? Give reason.

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