How a rheostat can be used as a current limiter or a potential divider?

By changing the position of the wiper on the resistive element, the amount of resistance can be increased or decreased thereby controlling the amount of current. Then the rheostat is used to control a current by changing the value of its resistance making it a true variable resistor.

How can a rheostat be used as a potential divider?

Rheostats are very similar in construction to potentiometers, but are not used as a potential divider, but as a variable resistance. They use only 2 terminals instead of the 3 terminals that potentiometers use. One connection is made at one end of the resistive element, the other at the wiper of the variable resistor.

Why is rheostat also called a potential divider?

Answer Expert Verified. Rheostat is a large resistance which can be used as a variable resistance. The two ends T1 and T2 of the rheostat are connected between the source of potential E (battery).

How does a rheostat control the current in a circuit?

Rheostat is a variable resistor, which is used to control the flow of electric current by manually increasing or decreasing the resistance.

How is a rheostat used?

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.

Why do we use a rheostat in a circuit?

A rheostat is a variable resistor which is used to control current. They are able to vary the resistance in a circuit without interruption. The construction is very similar to the construction of potentiometers.

How do you hook up a rheostat?

Connect one wire of your rheostat to either one of the two leads from your voltage source. Connect one lead from the electrical device you want to control to the other lead of your rheostat. Connect the other lead of the device you want to control to the other lead of your voltage source.

What is rheostat function?

What does a rheostat control?

The rheostat can adjust generator characteristics, dim lights, and start or control the speed of motors. Its resistance element can be a metal wire or ribbon, carbon, or a conducting liquid, depending on the application.