Draw Circuit Diagram Of Potentiometer To Compare The Emf Of Two Cells
See that e e 1 and also e e 2.
Draw circuit diagram of potentiometer to compare the emf of two cells. Potentiometer are commonly used to control electrical devices such as volume controls on audio equipment. 40 7 the points d and f may be considered as the two terminals of a voltmeter. Write the formula used.
Arrange the apparatus as shown in the circuit diagram. Draw a circuit diagram to compare the emf of two primary cells. By closing key k 1 the cell e 1 is included in the circuit.
The circuit diagram of the potentiometer is as. Where e 1 and e 2 are the e m f. Connect the positive poles of the cells to the terminal and the negative poles to the terminal a and b of the two way key.
E of the battery and the e m fs. A potentiometer wire of length 200 cm has a resistance 10 ω. Insert the plug in the key k and also in between the terminals a and c of the two way key.
From the figure connect points 1 and 3 together with balance point at point n1 where an 1 l 1 now connect points 2 and 3 together with balance point at point n. Draw a labelled circuit diagram of a potentiometer to compare emfs of two cells. Using a voltmeter it is possible to measure only the potential difference between the two terminals of a cell but using a potentiometer we can determine the value of emf of a given cell.
Write the working formula derivation not required. When the key k is closed a constant current flows the potentiometer wire. Asked jul 18 in physics by aalaya 47 6k points.