Question

ohms law with exoerimental verification

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Answer 1

It is written as V=IR V = I R , where R is the resistance of the conductor.

1.Ohm's Law: The current I is proportional to the voltage V.

2.A simple circuit to verify Ohm's law.

3.A circuit with Rheostat to verify Ohm's law.

4.A galvanometer is converted to a voltmeter by connecting very high resistance in series

Answer 2

Explanation:

OHM'S LAW - LAW

According to Ohm's Law, the current flowing in a conductor is directly proportional to the potential difference across its ends provided the physical conditions and temperature of conductor remains constant.

I∝V

V=IR

VERIFYING OHM'S LAW -

Let resistance used for verification be R. Make a circuit of R, voltmeter and ammeter measuring voltage and current through R, rheostat (variable resistor), and a cell. Connect the components properly. Note down values of voltage and current shown by voltmeter and ammeter. Repeat the above for different values of Rheostat. Record data in a tabular format and calculate IV for each case. Its should be approximately same. Plot V v/s I on a graph paper. A straight line is obtained whose slope equals resistance.

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