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Potentiometer Video Lecture | Physics Class 12 - NEET

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FAQs on Potentiometer Video Lecture - Physics Class 12 - NEET

1. What is a potentiometer?
Ans. A potentiometer is a type of variable resistor that is used to control the flow of electric current in a circuit. It consists of a resistive element with a sliding contact, which allows the resistance to be varied by adjusting the position of the contact.
2. How does a potentiometer work?
Ans. A potentiometer works by changing the resistance in a circuit. When the sliding contact is moved along the resistive element, the length of the resistive path changes, thus altering the resistance. This change in resistance affects the flow of electric current in the circuit.
3. What are the applications of potentiometers?
Ans. Potentiometers are widely used in various applications, including volume control in audio systems, dimmer switches for lighting control, and position sensing in robotics. They are also used in industrial automation, scientific instruments, and telecommunications equipment.
4. How do I choose the right potentiometer for my application?
Ans. When choosing a potentiometer, consider factors such as the required resistance range, power rating, physical size, and mounting options. Additionally, determine whether a linear or logarithmic (audio taper) potentiometer is more suitable for your application, based on the desired response curve.
5. Can a potentiometer be used as a voltage divider?
Ans. Yes, a potentiometer can be used as a voltage divider. By connecting the fixed terminals of the potentiometer to the power supply and the ground, and the sliding contact to the desired output point, the potentiometer can divide the input voltage proportionally based on the position of the sliding contact. This feature makes potentiometers useful in applications such as analog control circuits.
98 videos|387 docs|104 tests
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