What is the main function of rheostat?
Answers
Answer:
Rheostat, adjustable resistor used in applications that require the adjustment of current or the varying of resistance in an electric circuit. The rheostat can adjust generator characteristics, dim lights, and start or control the speed of motors
Explanation:
Rheostat is a variable resistance system.
It is used in many situations such as
1)used to verify ohm’s law
2)used to measure internal resistance of a cell
3)used to compare emfs of two cells and many more.
It is an instrument used in almost all circuits to account for the above mentioned things.
N.B:- The basic difference between resistance box and rheostat is that we can determine how much resistance is applied in case of resistance box but the thing is quite opposite for rheostat.
Hope you understood.
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