Home » Posts tagged 'Potentiometer'

Tag Archives: Potentiometer

Uses of a potentiometer

What is the use of a potentiometer and could you explain its working (as level physics)

 

Asked Zoha

Answer:

The potentiometer is mainly used for,

  • To compare the emfs of two primary cells
  • To determine the internal resistance of a primary cell
  • To determine the value of a high resistance
  • To determine the emf of a cell.

pmThe details can be found here in NCERT Text book

 

Conversion of Galvanometer to Ammeter problem

Diagram of D'Arsonval/Weston type galvanometer.
Diagram of D'Arsonval/Weston type galvanometer. (Photo credit: Wikipedia)

A galvanometer can be converted to ammeter by connecting a low resistance, called shunt in parallel with it. If a galvanometer of resistance 45 Ω is shunted by a resistance of 5 Ω what fraction of main current passes through the  Galvanometer? What is the current which flows through the shunt?

 

Hits so far @ AskPhysics

  • 2,266,760 hits

Subscribe to AskPhysics via Email

Enter your email address to subscribe to this blog and receive notifications of new posts by email.

Join 4,339 other subscribers

March 2021
M T W T F S S
1234567
891011121314
15161718192021
22232425262728
293031  

Schrodinger’s Cat in Daily Life

%d bloggers like this: