Home
Class 12
PHYSICS
An unknown resistance R is connected in ...

An unknown resistance R is connected in series with a 2 ohm resistance. A current is flowing in this combination. The balancing length for potential difference across 2 ohm resistor, in a potentiometer experiment is found to be 300 cm, while the balancing length for the potential difference across the unknown R is found to be 360cm. The unknown resistance R is

Promotional Banner

Similar Questions

Explore conceptually related problems

In the given circuit find potential difference across 10 ohm resistance

In a potential meter arrangement shown in fig. The balancing length for potential difference across X,Y points is found to be 45.5 cm. Then the balancing length for potential difference across ( Y ) and ( Z) would be

A resistance of 6 ohms is connected in series with another resistance of 4 ohms. A potential difference of 20 volts is applied across the combination. Calculate the current through the circuit and potential difference across the 6 ohm resistance.

A cell having an emf E and internal resistance r is connected across a variable external resistance R. As the resistance R is increased, the plot of potential difference V across R is given by

AN ideal battery of 4 V and resistance R are connected in series in the primary circuit of a potentiometer of length 1 m and the value of 5 ohm, to give a difference of 5mV across 10 cm of potentiometer wire , is :

The potential gradient of potentiometer is 0.2 "volt"//m . A current of 0.1 amp is flowing throgh a coil of 2 ohm resistance. The balancing length in meters for the potential difference at the ends of this coil will be

In potentiometer experiment, if l_(1) is the balancing length for e.m.f. of the cell of internal resistance r and l_(2) is the balancing length for its terminal potential difference when shunted with resistance R then :