Motional EMF Calculator

✖Magnetic fields are produced by electric currents, which can be macroscopic currents in wires, or microscopic currents associated with electrons in atomic orbits.ⓘ Magnetic Field [B]			+10% -10%
✖Length is the measurement or extent of something from end to end.ⓘ Length [L_emf]			+10% -10%
✖Velocity is a vector quantity (it has both magnitude and direction) and is the rate of change of the position of an object with respect to time.ⓘ Velocity [v]			+10% -10%

✖Electromotive force is the capability of the system to make the charge flow.ⓘ Motional EMF [ε]

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Motional EMF Solution

STEP 0: Pre-Calculation Summary

Formula Used

Electromotive Force = Magnetic Field*Length*Velocity
ε = B*L_emf*v
This formula uses 4 Variables

Variables Used

Electromotive Force - (Measured in Volt) - Electromotive force is the capability of the system to make the charge flow.
Magnetic Field - (Measured in Tesla) - Magnetic fields are produced by electric currents, which can be macroscopic currents in wires, or microscopic currents associated with electrons in atomic orbits.
Length - (Measured in Meter) - Length is the measurement or extent of something from end to end.
Velocity - (Measured in Meter per Second) - Velocity is a vector quantity (it has both magnitude and direction) and is the rate of change of the position of an object with respect to time.

STEP 1: Convert Input(s) to Base Unit

Magnetic Field: 2.5 Weber per Square Meter --> 2.5 Tesla (Check conversion here)
Length: 3 Meter --> 3 Meter No Conversion Required
Velocity: 6 Meter per Second --> 6 Meter per Second No Conversion Required

STEP 2: Evaluate Formula

Substituting Input Values in Formula

ε = B*L_emf*v --> 2.5*3*6

Evaluating ... ...

ε = 45

STEP 3: Convert Result to Output's Unit

45 Volt --> No Conversion Required

FINAL ANSWER

45 Volt <-- Electromotive Force

(Calculation completed in 00.004 seconds)

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Home » Physics » Electromagnetic Induction and Alternating Currents » Basic Physics » Electromagnetism » Basics of Electromagentic Induction » Motional EMF

Credits

Created by Venkata Sai Prasanna Aradhyula

Birla Institute of Technology & Science (BITS), Hyderabad

Venkata Sai Prasanna Aradhyula has created this Calculator and 10+ more calculators!

Verified by Mayank Tayal

National Institute of Technology (NIT), Durgapur

Mayank Tayal has verified this Calculator and 10+ more calculators!

< Basics of Electromagentic Induction Calculators

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LaTeX Go Decay of Current in L-R Circuit = Electric Current*e^(-Time Period of Progressive Wave/(Inductance/Resistance))

Current Value for Alternating Current

LaTeX Go Electric Current = Peak Current*sin(Angular Frequency*Time+Phase Difference)

Capacitive Reactance

LaTeX Go Capacitive Reactance = 1/(Angular Velocity*Capacitance)

Motional EMF Formula

LaTeX Go

Electromotive Force = Magnetic Field*Length*Velocity
ε = B*L_emf*v

What is motional EMF ?

An emf induced by motion relative to a magnetic field is called a motional emf. When an electrical conductor or an object is introduced into a magnetic field B, due to its dynamic interaction with the magnetic field, emf e is induced in it. This emf is known as induced emf.

How to Calculate Motional EMF?

Motional EMF calculator uses Electromotive Force = Magnetic Field*Length*Velocity to calculate the Electromotive Force, The Motional EMF formula is defined as the electromotive force in terms of magnetic field, length of the object moving at speed v relative to the strength of the magnetic field B. Electromotive Force is denoted by ε symbol.

How to calculate Motional EMF using this online calculator? To use this online calculator for Motional EMF, enter Magnetic Field (B), Length (L_emf) & Velocity (v) and hit the calculate button. Here is how the Motional EMF calculation can be explained with given input values -> 45 = 2.5*3*6.

FAQ

What is Motional EMF?

The Motional EMF formula is defined as the electromotive force in terms of magnetic field, length of the object moving at speed v relative to the strength of the magnetic field B and is represented as ε = B*L_emf*v or Electromotive Force = Magnetic Field*Length*Velocity. Magnetic fields are produced by electric currents, which can be macroscopic currents in wires, or microscopic currents associated with electrons in atomic orbits, Length is the measurement or extent of something from end to end & Velocity is a vector quantity (it has both magnitude and direction) and is the rate of change of the position of an object with respect to time.

How to calculate Motional EMF?

The Motional EMF formula is defined as the electromotive force in terms of magnetic field, length of the object moving at speed v relative to the strength of the magnetic field B is calculated using Electromotive Force = Magnetic Field*Length*Velocity. To calculate Motional EMF, you need Magnetic Field (B), Length (L_emf) & Velocity (v). With our tool, you need to enter the respective value for Magnetic Field, Length & Velocity 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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