A constant voltage `V_0` is applied to a potentiometer of resistance `R` connected to an ammeter. A constant resistor `r` is connected to the sliding contact of the potentiometer and the fixed end of the potentiometer. How will the reading of ammeter vary as the sliding contact is moved from one end of the potentiometer to the other ? The resistance of ammeter is assumed to be negligible.

A constant voltage V_(0) is applied to a potentiometer of resistance R connected to an ammeter. A constant resistor r is connected to the sliding contact of the potentiometer and the fixed end of the potentiometer. If the reading of ammeter vary as the sliding contact is moved from one end of the potentiometer to the other. The resistance of ammeter is assumed to be negligible. Find the minimum reading of the Ammeter.

The given potentiometer has its wire of resistance 10 Omega When the sliding contact is in the middle of the potentiometer wire, the potential drop across 2 Omega resistor is :

A voltage V_(0) is applied to a potentiometer whose sliding constant is exacly in tne middle. A voltmeter V is connected between the sliding constant and one fixed end of the potentionmeter. If is assumed that the resistance of the voltmeter is not very high in comparison to the resistance of the potentiometer wire. What voltage will the voltmeter show : higher than, less than, or equal to V_(0)//2 ?

A voltage V_(0) is applied to a potentiometer whose sliding constant is exacly in tne middle. A voltmeter V is connected between the sliding constant and one fixed end of the potentionmeter. If is assumed that the resistance of the voltmeter is not very high in comparison to the resistance of the potentiometer wire. What voltage will the voltmeter show : higher than, less than, or equal to V_(0)//2 ?

The potentiometer wire of resistance R is connected in series with a cell of e.m.f. E and of resistance R_(h) . The current flowing through the potentiometer wire is

In order to determine the internal resistance of a primary cell by means of potentiometer the emf of the battery connected across the ends of the potentiometer wire should be

A celll of V volts and neglgible internal resistance is connected across a potentiometer Whose sliding contact is placed exactly at the middle . A voltmeter is connected between the sliding contact and one fixed end of the potentimeter . If it is assumed that the resistance of voltmeter is not very high compared with the resistance of the potentimeter , what voltage will the voltmeter show : higher than or less than (V)/(2) ? Justify your answer .