In the Ohm’s law experiment copper wire and nichrome wire are used for the same length and area of cross section. (b) If a supply of V volt is connected across the free terminals, what is the ratio of potential difference between the junctions?ĥ. Two resistors of resistance R and 2R connected in parallel and the combination are connected in series with another resistor of resistance 4R, (a) find the ratio of current in parallel combination. If both are ideal instruments, they will show any reading.Ĥ. Ohmicconductor :- magnet at constant temperature,Non ohmicconductor :- electric bulb, diodesģ.In the Ohm’s law experiment, if the position of ammeter and volt meter are interchanged, what happens to the measurement readings?Īns. Give examples of ohmic and non ohmic conductors.Īns. In which conductor less current will flow and why?Īns Resistor R 1 since current is inversely proportional to resistance.Ģ. A constant potential difference is maintained across two resistors of resistances R 1 and R 2 (R 2 class 12 physics practical file

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Class 12 physics practical file