Question

explain the concept of rheastat​

Answer 1

$\huge{\pink{\green {\sf\boxed{ANSWER}}}}$

$<h2 >Rheostat is a variable resistor, which is used to control the flow of electric current by manually increasing or decreasing the resistance. The English scientist Sir Charles Wheatstone coined the word rheostat, it is derived from the Greek word “rheos” and “-statis” which means a stream controlling device or a current controlling device.</h2>$#Be_Brainly

Answer 2

ANSWER

A RHEOSTAT is defined as the variable resistor used to control the amount of current flowing in a circuit.

The principal of rheostat uses Ohm's law which stats that the current flowing across a device is inversely proportional to the resistance for a given voltage.

Here, the current decrease on increase in resistance or the current increase as decrease in resistance.