Why are certain procedures necessary in a potentiometer experiment?

In summary, the conversation discusses the reasons behind certain procedures in a potentiometer experiment. These include connecting the positive pole of the battery to the same terminal as the driver cell, removing the protective resistor before determining the final balanced point, including a rheostat in the circuit with the driver cell but ensuring its resistance is not too high, the need for a standard cell in calibrating an ammeter but not in measuring the internal resistance of a cell, and using a specific circuit diagram when comparing the resistance of two resistors placed in series.
  • #1
hunter
1
0
can someone please explain to me...?

explain the reasons for the following procedures in potentiometer experiment:
(a)the positive pole of a battery whose emf is required is connected to the same terminal of the potentiometer wire as the positive pole of the driver cell.
(b)The protective resister is removed before a final balanced point is determined.
(c)A rheostat is sometimes included in the potentiometer circuit with the driver cell but its resistance must not be too high.
(d)A standard cell is needed in an experiment to calibrate an ammeter but not in an experiment to measure the internal resistance of a cell.
(e)In comparing the resistance of two resistors A and B, the resistors are placed in series in a circuit.
 
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  • #2
You need specific circuit diagram to augment these somewhat unclear problem statements
 

FAQ: Why are certain procedures necessary in a potentiometer experiment?

1. What is a potentiometer?

A potentiometer is an electronic component that measures and adjusts the electrical potential difference between two points in a circuit.

2. How does a potentiometer work?

A potentiometer works by using a resistive element, such as a wire or strip of material, to control the flow of current and adjust the potential difference between two points in a circuit. The position of the sliding contact on the resistive element determines the output voltage.

3. What is the purpose of conducting a potentiometer experiment?

The purpose of a potentiometer experiment is to measure the unknown voltage or current in a circuit, calibrate other instruments, or determine the internal resistance of a battery. It can also be used to study the behavior of different materials under varying electrical conditions.

4. What are the different types of potentiometers?

There are three main types of potentiometers: rotary, slide, and trimpot. Rotary potentiometers have a rotating knob or dial, slide potentiometers have a sliding bar or lever, and trimpot potentiometers are miniature versions used for fine adjustments.

5. What factors can affect the accuracy of a potentiometer experiment?

The accuracy of a potentiometer experiment can be affected by factors such as the quality and condition of the resistive element, the precision of the sliding contact, and external factors like temperature and humidity. Additionally, the skill and technique of the experimenter can also play a role in the accuracy of the results.

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