Voltmeter Resistance Calculator

✖Range of Voltmeter is the total range of instrument.ⓘ Range of Voltmeter [V_r]			+10% -10%
✖Current Magnitude is the magnitude of the rate of flow of charged particles.ⓘ Current Magnitude [I]			+10% -10%
✖Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.ⓘ Resistance [R]			+10% -10%

✖Voltmeter Resistance is the resistance of voltmeter.ⓘ Voltmeter Resistance [R_v]

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Formula

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Voltmeter Resistance

Formula

`"R"_{"v"} = ("V"_{"r"}-"I"*"R")/"I"`

Example

`"57.46757Ω"=("200V"-"2.96A"*"10.1Ω")/"2.96A"`

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Voltmeter Resistance Solution

STEP 0: Pre-Calculation Summary

Formula Used

Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude
R_v = (V_r-I*R)/I
This formula uses 4 Variables

Variables Used

Voltmeter Resistance - (Measured in Ohm) - Voltmeter Resistance is the resistance of voltmeter.
Range of Voltmeter - (Measured in Volt) - Range of Voltmeter is the total range of instrument.
Current Magnitude - (Measured in Ampere) - Current Magnitude is the magnitude of the rate of flow of charged particles.
Resistance - (Measured in Ohm) - Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

STEP 1: Convert Input(s) to Base Unit

Range of Voltmeter: 200 Volt --> 200 Volt No Conversion Required
Current Magnitude: 2.96 Ampere --> 2.96 Ampere No Conversion Required
Resistance: 10.1 Ohm --> 10.1 Ohm No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

R_v = (V_r-I*R)/I --> (200-2.96*10.1)/2.96

Evaluating ... ...

R_v = 57.4675675675676

STEP 3: Convert Result to Output's Unit

57.4675675675676 Ohm --> No Conversion Required

FINAL ANSWER

57.4675675675676 ≈ 57.46757 Ohm <-- Voltmeter Resistance

(Calculation completed in 00.004 seconds)

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Home » Engineering » Electronics and Instrumentation » Measuring Instrument Circuits » Voltmeter » Voltmeter Specifications » Voltmeter Resistance

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Created by Shobhit Dimri

Bipin Tripathi Kumaon Institute of Technology (BTKIT), Dwarahat

Shobhit Dimri has created this Calculator and 900+ more calculators!

Verified by Urvi Rathod

Vishwakarma Government Engineering College (VGEC), Ahmedabad

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< 16 Voltmeter Specifications Calculators

m of Moving Iron Voltmeter

Go Multiplying Power = sqrt(((Meter Resistance+Series Resistance)^2+(Angular Frequency*Inductance)^2)/((Meter Resistance)^2+(Angular Frequency*Inductance)^2))

Voltage of Moving Iron Voltmeter

Go Meter Voltage Voltmeter = Meter Current*sqrt((Meter Resistance+Series Resistance)^2+(Angular Frequency*Inductance)^2)

Deflection Angle of ED Instrument (Voltmeter)

Go Angle of Deflection = (Total Voltage^2*Change in Mutual Inductance*cos(Phase Difference))/(Kappa*Impedance^2)

Deflecting Torque of ED Instrument (Voltmeter)

Go Torque = ((Total Voltage/Impedance)^2)*Change in Mutual Inductance*cos(Phase Difference)

Source Voltage

Go Source Voltage = (1/Potential Difference)*(1-exp(-Time/Resistance*Capacitance))

Voltage across Capacitance

Go Potential Difference = Source Voltage*(1-exp(-Time/Resistance*Capacitance))

Voltmeter Resistance

Go Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude

Nth resistance in multi-range voltmeter

Go Nth Multiplier Resistance = (Nth Multiplying Factor-(n-1)th Multiplying Factor)*Internal Resistance of Meter Movement

Rs of PMMC based voltmeter

Go Multiplier Resistance = (Voltage/Full Scale Deflection Current)-Internal Resistance of Meter Movement

Range of Voltmeter

Go Range of Voltmeter = Current Magnitude*(Voltmeter Resistance+Resistance)

Voltmeter current

Go Current Magnitude = (Range of Voltmeter-Resistance)/Voltmeter Resistance

m of PMMC based voltmeter

Go Multiplying Power = 1+(Multiplier Resistance/Internal Resistance of Meter Movement)

Self-Capacitance of Coil

Go Self-Capacitance of Coil = Additional Capacitance-Capacitance of Voltmeter

Additional Capacitance

Go Additional Capacitance = Self-Capacitance of Coil+Capacitance of Voltmeter

Volts per Division

Go Volt Per Division = Peak Voltage/Vertical Peak to Peak Division

Capacitance of Voltmeter

Go Capacitance of Voltmeter = Charge/Capacitance

Voltmeter Resistance Formula

Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude
R_v = (V_r-I*R)/I

What is basic range of a meter?

The input voltage that causes maximum deflection of the meter is known as the basic range of a meter. It occupies the lowest range on the range switch in the unamplified circuits.

How to Calculate Voltmeter Resistance?

Voltmeter Resistance calculator uses Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude to calculate the Voltmeter Resistance, The Voltmeter Resistance formula is defined as internal resistance of voltmeter.Ideal voltmeter has infinite resistance so no current will flow. This is why voltmeters are placed in parallel to the circuit, not in series. Ammeter is placed in series however and has low resistance. Voltmeter Resistance is denoted by R_v symbol.

How to calculate Voltmeter Resistance using this online calculator? To use this online calculator for Voltmeter Resistance, enter Range of Voltmeter (V_r), Current Magnitude (I) & Resistance (R) and hit the calculate button. Here is how the Voltmeter Resistance calculation can be explained with given input values -> -0.533368 = (200-2.96*10.1)/2.96.

FAQ

What is Voltmeter Resistance?

The Voltmeter Resistance formula is defined as internal resistance of voltmeter.Ideal voltmeter has infinite resistance so no current will flow. This is why voltmeters are placed in parallel to the circuit, not in series. Ammeter is placed in series however and has low resistance and is represented as R_v = (V_r-I*R)/I or Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude. Range of Voltmeter is the total range of instrument, Current Magnitude is the magnitude of the rate of flow of charged particles & Resistance is a measure of the opposition to current flow in an electrical circuit. Its S.I unit is ohm.

How to calculate Voltmeter Resistance?

The Voltmeter Resistance formula is defined as internal resistance of voltmeter.Ideal voltmeter has infinite resistance so no current will flow. This is why voltmeters are placed in parallel to the circuit, not in series. Ammeter is placed in series however and has low resistance is calculated using Voltmeter Resistance = (Range of Voltmeter-Current Magnitude*Resistance)/Current Magnitude. To calculate Voltmeter Resistance, you need Range of Voltmeter (V_r), Current Magnitude (I) & Resistance (R). With our tool, you need to enter the respective value for Range of Voltmeter, Current Magnitude & Resistance and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well.

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