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# What does currently null mean on credit report?

not a

## What does null balance mean?

without value or consequence

## What is the null point in potentiometer?

The balancing point or null point of the potentiometer is the point on the slide wire when the galvanometer shows zero deflection.

## What is null deflection method?

Null-Type Method: A null-type device attempts to maintain deflection at zero by suitable application of a known effect opposing the generated by the measured quantity. The opposingEffect increases until a balanced is achieved, At which point Deflection Is measured.

## Which cell is used in potentiometer?

Constant current potentiometer A standard electrochemical cell is used whose emf is known (e.g. 1.0183 volts for a Weston standard cell). The supply voltage VS is then adjusted until the galvanometer shows zero, indicating the voltage on R2 is equal to the standard cell voltage.

## What is the working of potentiometer?

Potentiometers work by varying the position of a sliding contact across a uniform resistance. In a potentiometer, the entire input voltage is applied across the whole length of the resistor, and the output voltage is the voltage drop between the fixed and sliding contact as shown below.

## What is sensitivity of potentiometer?

Sensitivity of potentiometer is defined as the smallest potential difference that is measured by using potentiometer. Sensitivity of potentiometer can be increased by: Increasing the length of the potentiometer wire. By reducing the current in the circuit by using a rheostat.

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## What is an example of a potentiometer?

Common Examples of Potentiometers are: Measuring Position on a gaming joystick. Controlling audio equipment using volume controls.

## How can the current sensitivity increase?

So, sensitivity of the galvanometer can be increased either by increasing the number of turns (N), using strong magnets or increasing the area of the coil (A). So, the correct answer is that the sensitivity of a moving coil galvanometer can be increased by increasing the number of turns of the coil.

## Why manganin wire is used in potentiometer?

Manganin foil and wire is used in the manufacture of POTENTIOMETER because of its virtually zero temperature coefficient of resistance value and long term stability. Also it has a positive temperature coefficient of resistance.

## Which material is used in potentiometer?

The resistive element of inexpensive potentiometers is often made of graphite. Other materials used include resistance wire, carbon particles in plastic, and a ceramic/metal mixture called cermet.

## Which wire is thicker copper or manganin?

Therefore, between a copper wire and a manganin wire of the same length and resistance, the copper wire is thicker.

## Which wire is thicker copper or Nichrome?

Nichrome has more resistivity than copper. Hence for equal length and resistance it has to to be thicker since resistance is inversely proportional to the diameter of the wire.

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## What is constantan and manganin?

Alloys like manganin and constantan are used for making standard resistance coils as they have high resistivity, low-temperature coefficient of resistance. Therefore, these alloys are used for making wire-bound standard resistors. Their resistance value would change very little with temperature.

## Which will produce more heat Nichrome or copper?

Nichrome and copper wires of same length and same radius are connected in series. Current is I passed through them. Thus nichrome wire will produce more heat.

## Why does Nichrome wire gets heated first?

Nichrome wire gets heated up more. So more the resistance of a wire, more will be heat generated in it. Hence, we can say nichrome wire gets more heated up as compared to the copper wire.