Electrical Engineering - Voltage, Current and Resistance - Discussion
Discussion Forum : Voltage, Current and Resistance - General Questions (Q.No. 11)
11.
A two-terminal variable resistor is known as a
Discussion:
28 comments Page 1 of 3.
Satish said:
5 years ago
The answer should be a thermistor. Except this, all are three-terminal devices.
(1)
Saurav Chhetry said:
5 years ago
Rheostat have two fixed terminal and one movable terminal all together three terminal but only two terminals are used. Only one of those two fixed terminals and another movable terminal are used.
Shilpa.S said:
6 years ago
A potentio meter has 3 pins. Two terminals (the blue and green) are connected to a resistive element and the 3rd terminal (black one) is connected to an adjustable wiper. The potentio meter can work as a rheostat (variable resistor) or a voltage divider.
(2)
Shivaraju said:
7 years ago
How to work potentiometer?
M. junaid said:
8 years ago
Wiper is sliding contact on potentiometer.
Parth said:
8 years ago
Wiper is one type of variable resistance, which have three terminal and one nobe to varies the resistance.
Fatima said:
9 years ago
Example for wiper, a bus or a 4 wheeled vehicle has a wiper used to remove the rain droplets on the screen, wiper is attached to potentiometer.
Shivamadhu said:
9 years ago
Rheostat has only two terminal. How can you say it has three terminal @Saurav Raj?
Ponjothilakshmi said:
9 years ago
Wiper is a sliding contact. Think of the meter bridge experiment where we use jockey, similarly wiper.
(1)
Rajesh Bishnoi said:
9 years ago
A wiper is the sliding contact in a Potentiometer.
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