State ohms law . Write an activity explaining the relationship between current and potential
difference along with a neat and labelled diagram .
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Answer:
Ohm's law states that under constant temperature, the current passing through conductor is directly proportional to potential difference applied across it. Answer: ... Changing the resistance would alter potential drop across the resistor which would affect the amount of current.
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12th
Physics
Current Electricity
Ohm's Law
State Ohm's law. Suggest an...
PHYSICS
State Ohm's law. Suggest an experiment to verify it and explain the procedure.
December 26, 2019Srinivasa Dhir
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Amount of current flowing is proportional to potential difference /voltage under fixed physical condition.
vαI
V=IR
R=IV
Experiment to verify Ohm's Law
Aim : To show that the ratio of IV is a constant for a conductor.
Materials required: 5 dry cells of 1.5V each, conducting wires, an ammeter, a voltmeter, thin iron spoke of length 10cm, LED and key.
Procedure :
Connect a circuit as shown in the figure.

Solder the conducting wires to the ends of the iron spoke and close the key.
Note the reading of ammeter (current) and voltmeter (potential difference) and tabulate them.
Now connect two cells in the circuit and note the respective readings of ammeter and voltmeter in the above table.
Repeat the above procedure using three cells, four cells, and five cells respectively.
Record the values of potential difference, Vand current, I corresponding to each case in the above table.
Find IV for each set of values.
We notice that