Nikita Suryawanshi
Vellore Institute of Technology (VIT), Vellore
Nikita Suryawanshi has created this Calculator and 100+ more calculators!
Devyaani Garg
Shiv Nadar University (SNU), Greater Noida
Devyaani Garg has verified this Calculator and 25+ more calculators!

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
Voltage of Moving Iron Voltmeter
Meter Voltage=Im*sqrt((Rm+Rs)^2+(Omega*Inductance)^2) 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
R<sub>s</sub> of PMMC based voltmeter
Rs=(Voltage (full range)/Im)-Rm GO
m of PMMC based Ammeter
Multiplying Power=(1+Rm)/Rsh GO
m of PMMC based voltmeter
Multiplying Power=1+(Rs/Rm) GO
DC Meter Sensitivity
Sensitivity=1/Current (fs) GO

1 Other formulas that calculate the same Output

Value of R<sub>h</sub>
Resistance (half)=(Resistance 1*Rm)/(Resistance 1+Rm) GO

Value of R<sub>h</sub> Formula

Resistance (half)=Voltage*Resistance 2/(Current (fs)*Resistance 2+Current (fs)*Rm)
R<sub>h</sub>=E*R<sub>2</sub>/(I<sub>fs</sub>*R<sub>2</sub>+I<sub>fs</sub>*Rₘ)
More formulas
Value of R<sub>1</sub> GO
Value of R<sub>2</sub> GO
Value of I<sub>m</sub> GO
Value of R<sub>h</sub> GO
Value of S GO

How is the pointer scale marked?

The pointer scale graduates from zero to infinity from the right to the left. Therefore the current decreases from maximum to zero from right to left.

How to Calculate Value of Rh?

Value of Rh calculator uses Resistance (half)=Voltage*Resistance 2/(Current (fs)*Resistance 2+Current (fs)*Rm) to calculate the Resistance (half), The Value of Rh formula is directly dependent on the voltage applied and the shunt resistance. It gives the effective voltage at half scale operation. Resistance (half) and is denoted by Rh symbol.

How to calculate Value of Rh using this online calculator? To use this online calculator for Value of Rh, enter Voltage (E), Resistance 2 (R2), Current (fs) (Ifs) and Rm (Rₘ) and hit the calculate button. Here is how the Value of Rh calculation can be explained with given input values -> 100 = 15*10/(0.1*10+0.1*5).

FAQ

What is Value of Rh?
The Value of Rh formula is directly dependent on the voltage applied and the shunt resistance. It gives the effective voltage at half scale operation and is represented as Rh=E*R2/(Ifs*R2+Ifs*Rₘ) or Resistance (half)=Voltage*Resistance 2/(Current (fs)*Resistance 2+Current (fs)*Rm). Voltage is the value of the voltage applied in the ohmmeter, Resistance 2 is the zero adjust or shunt resistance of the ohmmeter, Current (fs) is the measure of the full scale current flowing through the meter and Rm is the internal resistance of the coil in PMMC instrument.
How to calculate Value of Rh?
The Value of Rh formula is directly dependent on the voltage applied and the shunt resistance. It gives the effective voltage at half scale operation is calculated using Resistance (half)=Voltage*Resistance 2/(Current (fs)*Resistance 2+Current (fs)*Rm). To calculate Value of Rh, you need Voltage (E), Resistance 2 (R2), Current (fs) (Ifs) and Rm (Rₘ). With our tool, you need to enter the respective value for Voltage, Resistance 2, Current (fs) 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 Resistance (half)?
In this formula, Resistance (half) uses Voltage, Resistance 2, Current (fs) and Rm. We can use 1 other way(s) to calculate the same, which is/are as follows -
  • Resistance (half)=(Resistance 1*Rm)/(Resistance 1+Rm)
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