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Nth resistance in multi-range Ammeter Formula

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Nth Multiplier Resistance is the nth number of resistance in multirange permanent magnet moving coil ammeter or voltmeter. Check FAQs

R n = \frac{R m}{m n - 1}

R_n - Nth Multiplier Resistance?R_m - Meter Resistance?m_n - Nth Multiplying Factor?

Nth resistance in multi-range Ammeter Example

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Here is how the Nth resistance in multi-range Ammeter equation looks like with Values.

Here is how the Nth resistance in multi-range Ammeter equation looks like with Units.

Here is how the Nth resistance in multi-range Ammeter equation looks like.

1.6667 = \frac{30}{19 - 1}

1.6667Ω = \frac{30Ω}{19 - 1}

1.6667 = \frac{30}{19 - 1}

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Nth resistance in multi-range Ammeter Solution

Follow our step by step solution on how to calculate Nth resistance in multi-range Ammeter?

FIRST Step Consider the formula

R n = \frac{R m}{m n - 1}

Next Step Substitute values of Variables

∴

R n = \frac{30Ω}{19 - 1}

Next Step Prepare to Evaluate

∴

R n = \frac{30}{19 - 1}

Next Step Evaluate

∴

R n = 1.66666666666667Ω

LAST Step Rounding Answer

∴

R n = 1.6667Ω

Nth resistance in multi-range Ammeter Formula Elements

Variables

Nth Multiplier Resistance

Nth Multiplier Resistance is the nth number of resistance in multirange permanent magnet moving coil ammeter or voltmeter.

Symbol: R_n

Measurement: Electric ResistanceUnit: Ω

Note: Value should be greater than 0.

Formulas to find Nth Multiplier Resistance

Meter Resistance

Meter Resistance refers to the inherent electrical resistance present within a measuring instrument. It is the resistance that the instrument itself presents to the flow of electric current.

Symbol: R_m

Measurement: Electric ResistanceUnit: Ω

Note: Value can be positive or negative.

Formulas to find Meter Resistance

Nth Multiplying Factor

Nth Multiplying Factor is the multiplying power of coil associated with the nth resistor in multi range ammeter.

Symbol: m_n

Measurement: NAUnit: Unitless

Note: Value should be greater than 0.

Formulas to find Nth Multiplying Factor

Other formulas in Ammeter category

Go Rsh of PMMC based Ammeter

R sh = \frac{I m \cdot R m}{I - I m}

Go m of PMMC based Ammeter

m = 1 + (\frac{R m}{R sh})

Go Resistance at switch position n for multi range Ammeter

R sn = \frac{R 1 + R m}{m n}

Go m of Moving Iron Ammeter

m = (\frac{R m}{R sh}) \cdot \sqrt{\frac{1 + {(\frac{ω \cdot L}{R m})}^{2}}{1 + {(\frac{ω \cdot L sh}{R sh})}^{2}}}

How to Evaluate Nth resistance in multi-range Ammeter?

Nth resistance in multi-range Ammeter evaluator uses Nth Multiplier Resistance = Meter Resistance/(Nth Multiplying Factor-1) to evaluate the Nth Multiplier Resistance, The Nth resistance in multi-range Ammeter formula defined as the specific resistor value that is used in the Nth range setting of the ammeter. Multi-range ammeters are designed to measure different ranges of current by incorporating multiple shunt resistors. Each resistor corresponds to a different range and is selected to allow the meter to measure currents across a wide span without damaging the instrument or losing accuracy. Nth Multiplier Resistance is denoted by R_n symbol.

How to evaluate Nth resistance in multi-range Ammeter using this online evaluator? To use this online evaluator for Nth resistance in multi-range Ammeter, enter Meter Resistance (R_m) & Nth Multiplying Factor (m_n) and hit the calculate button.

FAQs on Nth resistance in multi-range Ammeter

What is the formula to find Nth resistance in multi-range Ammeter?

The formula of Nth resistance in multi-range Ammeter is expressed as Nth Multiplier Resistance = Meter Resistance/(Nth Multiplying Factor-1). Here is an example- 7.5 = 30/(19-1).

How to calculate Nth resistance in multi-range Ammeter?

With Meter Resistance (R_m) & Nth Multiplying Factor (m_n) we can find Nth resistance in multi-range Ammeter using the formula - Nth Multiplier Resistance = Meter Resistance/(Nth Multiplying Factor-1).

Can the Nth resistance in multi-range Ammeter be negative?

No, the Nth resistance in multi-range Ammeter, measured in Electric Resistance cannot be negative.

Which unit is used to measure Nth resistance in multi-range Ammeter?

Nth resistance in multi-range Ammeter is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Nth resistance in multi-range Ammeter can be measured.

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