Nikita Suryawanshi
Vellore Institute of Technology (VIT), Vellore
Nikita Suryawanshi has created this Calculator and 100+ more calculators!
Payal Priya
Birsa Institute of Technology (BIT), Sindri
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11 Other formulas that you can solve using the same Inputs

m of Moving Iron Ammeter
Multiplying Power=(Rm/Rsh)*sqrt((1+((Omega*Inductance)/Rm)^2)/(1+((Omega*Shunt Inductance)/Rsh)^2)) GO
m of Moving Iron Voltmeter
Multiplying Power=sqrt(((Rm+Rs)^2+(Omega*Inductance)^2)/((Rm)^2+(Omega*Inductance)^2)) GO
Value of R<sub>1</sub>
Resistance 1=Resistance (half)-((Current (fs)*Rm*Resistance (half))/Voltage) GO
Voltage of Moving Iron Voltmeter
Meter Voltage=Im*sqrt((Rm+Rs)^2+(Omega*Inductance)^2) GO
R<sub>s</sub> for AC Operation (Full Wave)
Rs=(RMS value*Sensitivity (ac))-Rm-(2*R diode) GO
R<sub>s</sub> for AC Operation (Half Wave)
Rs=(RMS value*Sensitivity (ac))-Rm-R diode GO
R<sub>s</sub> for DC Operation (Full Wave)
Rs=(RMS value*Sensitivity)-Rm-(2*R diode) GO
R<sub>s</sub> for DC Operation (Half Wave)
Rs=(RMS value*Sensitivity)-Rm-R diode GO
R<sub>sh</sub> of PMMC based Ammeter
Rsh=(Im*Rm)/(Current (measured)-Im) GO
m of PMMC based Ammeter
Multiplying Power=(1+Rm)/Rsh GO
m of PMMC based voltmeter
Multiplying Power=1+(Rs/Rm) GO

4 Other formulas that calculate the same Output

R<sub>s</sub> for AC Operation (Full Wave)
Rs=(RMS value*Sensitivity (ac))-Rm-(2*R diode) GO
R<sub>s</sub> for AC Operation (Half Wave)
Rs=(RMS value*Sensitivity (ac))-Rm-R diode GO
R<sub>s</sub> for DC Operation (Full Wave)
Rs=(RMS value*Sensitivity)-Rm-(2*R diode) GO
R<sub>s</sub> for DC Operation (Half Wave)
Rs=(RMS value*Sensitivity)-Rm-R diode GO

R<sub>s</sub> of PMMC based voltmeter Formula

Rs=(Voltage (full range)/Im)-Rm
Rₛ=(V/Iₘ)-Rₘ
More formulas
Deflecting torque of PMMC instrument GO
Angle of deflection of PMMC GO
R<sub>sh</sub> of PMMC based Ammeter GO
m of PMMC based Ammeter GO
n<sup>th</sup> resistance in multi-range Ammeter GO
Resistance at switch position 'n' for multi range Ammeter GO
m of PMMC based voltmeter GO
n<sup>th</sup> resistance in multi-range voltmeter GO

What is PMMC?

PMMC stands for Permanent Magnet Moving Coil. The instruments which use the permanent magnet for creating the stationary magnetic field between which the coil moves are known as permanent magnet moving coil or PMMC instruments.

What is Voltage Multiplier?

Voltmeter multipliers are PMMC based voltmeters that have a resistance connected in series. It limits the current through the meter and does not allow the value to exceed set value for a full-scale deflection. This protects the meter from damage.

How to Calculate Rs of PMMC based voltmeter?

Rs of PMMC based voltmeter calculator uses Rs=(Voltage (full range)/Im)-Rm to calculate the Rs, The Rs of PMMC based voltmeter is the series resistance connected to the pmmc instrument to convert it to a working voltmeter. Rs and is denoted by Rₛ symbol.

How to calculate Rs of PMMC based voltmeter using this online calculator? To use this online calculator for Rs of PMMC based voltmeter, enter Voltage (full range) (V), Im (Iₘ) and Rm (Rₘ) and hit the calculate button. Here is how the Rs of PMMC based voltmeter calculation can be explained with given input values -> 1005 = (505/0.5)-5.

FAQ

What is Rs of PMMC based voltmeter?
The Rs of PMMC based voltmeter is the series resistance connected to the pmmc instrument to convert it to a working voltmeter and is represented as Rₛ=(V/Iₘ)-Rₘ or Rs=(Voltage (full range)/Im)-Rm. Voltage (full range) is the full range voltage of the pmmc based voltmeter, Im is the full scale deflection of the coil and Rm is the internal resistance of the coil in PMMC instrument.
How to calculate Rs of PMMC based voltmeter?
The Rs of PMMC based voltmeter is the series resistance connected to the pmmc instrument to convert it to a working voltmeter is calculated using Rs=(Voltage (full range)/Im)-Rm. To calculate Rs of PMMC based voltmeter, you need Voltage (full range) (V), Im (Iₘ) and Rm (Rₘ). With our tool, you need to enter the respective value for Voltage (full range), Im and Rm and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.
How many ways are there to calculate Rs?
In this formula, Rs uses Voltage (full range), Im and Rm. We can use 4 other way(s) to calculate the same, which is/are as follows -
  • Rs=(RMS value*Sensitivity)-Rm-R diode
  • Rs=(RMS value*Sensitivity)-Rm-(2*R diode)
  • Rs=(RMS value*Sensitivity (ac))-Rm-R diode
  • Rs=(RMS value*Sensitivity (ac))-Rm-(2*R diode)
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