## < ⎙ 11 Other formulas that you can solve using the same Inputs

Shunt in ammeter
Shunt=Electric current through galvanometer*Resistance through galvanometer/(Electric Current-Electric current through galvanometer) GO
Gravitational field of a ring
Gravitational Field=-([G.]*Mass*Distance from center to a point)/((Radius of ring)^2+(Distance from center to a point)^2)^(3/2) GO
Gravitational potential of a ring
Gravitational Potential=-([G.]*Mass)/sqrt((Radius of ring)^2+(Distance from center to a point)^2) GO
Heat Energy when an electric potential difference, the electric current and time taken
Heat Rate=Electric Potential Difference*Electric Current*Time Taken to Travel GO
Electromotive force when battery is discharging
Voltage=(Electromotive Force)-(Electric Current*Resistance) GO
Electromotive force when battery is charging
Voltage=(Electromotive Force)+(Electric Current*Resistance) GO
Power when electric potential difference and electric current are given
Power=Electric Potential Difference*Electric Current GO
Current Density when Electric Current and Area is Given
Current Density=Electric Current/Area of Conductor GO
Heat generated through resistance
Heat Rate=Electric Current^2*Resistance*Time GO
Power, when electric current and resistance are given
Power=(Electric Current)^2*Resistance GO
Ohm's Law
Voltage=Electric Current*Resistance GO

### field at the center of the ring Formula

field at the center of the ring=([Permeability-vacuum]*Electric Current)/(2*Radius of ring)
More formulas
Magnetic Field Due to a Straight Conductor GO
Magnetic Field Due to an Infinite Straight Wire GO
Magnetic Field on the Axis of a Ring GO
Force Between Parallel Wires GO
Field at the Center of an Arc GO
Field Inside a Solenoid GO
Field of a Bar Magnet at axial position GO
Field of a Bar Magnet at equatorial position GO
Angle of Dip GO
Magnetic Field for a Tangent Galvanometer GO
Electric Current for a Tangent Galvanometer GO
Current for a Moving Coil Galvanometer GO
Time Period of Magnetometer GO
Magnetic Permeability GO

## How the formula arises ?

We can use the Biot-Savart law to find the magnetic field due to a current. We first consider arbitrary segments on opposite sides of the loop to qualitatively show by the vector results that the net magnetic field direction is along the central axis from the loop. From there, we can use the Biot-Savart law to derive the expression for magnetic field. The magnetic field lines will be less denser in the region near the circumference of the loop than at the center. Thus, the magnetic field will be stronger at the center of the loop than in the region near the circumference.

## How to Calculate field at the center of the ring?

field at the center of the ring calculator uses field at the center of the ring=([Permeability-vacuum]*Electric Current)/(2*Radius of ring) to calculate the field at the center of the ring, field at the center of the ring is given by B=μ0I/2R(at center of loop), where R is the radius of the loop. RHR-2 gives the direction of the field about the loop. field at the center of the ring and is denoted by M symbol.

How to calculate field at the center of the ring using this online calculator? To use this online calculator for field at the center of the ring, enter Electric Current (i) and Radius of ring (r) and hit the calculate button. Here is how the field at the center of the ring calculation can be explained with given input values -> 0.000251 = ([Permeability-vacuum]*20)/(2*0.05).

### FAQ

What is field at the center of the ring?
field at the center of the ring is given by B=μ0I/2R(at center of loop), where R is the radius of the loop. RHR-2 gives the direction of the field about the loop and is represented as M=([Permeability-vacuum]*i)/(2*r) or field at the center of the ring=([Permeability-vacuum]*Electric Current)/(2*Radius of ring). Electric Current is the time rate of flow of charge through a cross sectional area and Radius of ring is a line segment extending from the center of a circle or sphere to the circumference or bounding surface.
How to calculate field at the center of the ring?
field at the center of the ring is given by B=μ0I/2R(at center of loop), where R is the radius of the loop. RHR-2 gives the direction of the field about the loop is calculated using field at the center of the ring=([Permeability-vacuum]*Electric Current)/(2*Radius of ring). To calculate field at the center of the ring, you need Electric Current (i) and Radius of ring (r). With our tool, you need to enter the respective value for Electric Current and Radius of ring and hit the calculate button. You can also select the units (if any) for Input(s) and the Output as well. Let Others Know