question_answer

A student while verifying Ohm's law calculated the value of resistance of the resistor for each set of observation.  However, the values of resistance were slightly different from the actual value. Is this experiment wrong? Justify your answer:

Answer:

His experiment is correct since some of the current is utilized to overcome the resistance of the wires of the circuit and instruments like ammeter and voltmeter. Thus the experimental values of resistance were different from the actual value of resistance.