Question

Observation
(
Mean
To study the dependence of current in on the potential
difference (V) across a resistor and deternine its resistance
Aim: To study the dependence of current on the potential difference V across a resistor and determine
Requirements: A Nichrome resistor, a rheostat, dry cells, a plug key a voltmeter an ammeter, connecting
(2) Connect the circuit as shown in Fig. (a) with connecting wires. Keep the plug key open. Scrub the end
13) Close the circuit by inserting the key in the plug. Adjust the rheostat by sliding the variable terminal
(4) Note the readings of the voltmeter and ammeter and open the circuit by removing the plug from the key
Experiment
2
its resistance.
wires and a sand paper.
Procedure :
Select a voltmeter and an ammeter of proper range and note their zero error and least count
of the connecting wires with a sand paper. Show the connections to the teacher examiner.
till desirable reading is obtained in the ammeter
(5) In place of a single cell connect two cells in series in the circult to increase the potential difference
(6) Close the plug key to complete the circuit. Note the readings of the ammeter and the voltmeter
171 Take three more readings by increasing the number of cells.
(81 Keep the plug key open after taking all readings.
(9) In each case, find the ratio of the potential difference across the resistor to the current in through
the resistor
rio Plot a graph of potential difference V vs. current !
(11) Disconnect the circuit before leaving the laboratory
Diagrams: Label the various components in the given diagrams.​

Answer 1

Answer:

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