Ampere’s Law Calculator

To calculate the magnetic field BBB using Ampere’s Law, its quite easy and instant. Just input the values of current, distance in the calculator to figure out the answer!

Ampere’s Law Calculator

Enter any 2 values to calculate the missing variable

Current

Amperes (A) Milliamperes (mA) Kiloamperes (kA)

Distance from the wire

Meters (m) Centimeters (cm) Millimeters (mm) Inches (in) Feet (ft)

Magnetic Field

Tesla (T) Gauss (G)

Calculate Reset

The Ampere’s Law Calculator allows you to calculate the magnetic field around a current-carrying wire. This tool is widely used in electromagnetism. It aims at determining the strength of the magnetic field at a certain distance from the wire.

Ampere’s Law is fundamental in understanding magnetic fields. Moreover, it is useful for engineers, physicists, and students studying mysteries of electromagnetism.

Formula:

$$B = \frac{μ_0 \cdot I}{2 \pi r}$$

Variable	Description
B	Magnetic field (in teslas)
μ_0	Permeability of free space $(4π \times 10^{-7}) \, T \cdot m/A$
I	Current through the wire (in amperes)
r	Distance from the wire (in meters)

Solved Calculation:

Example 1:

Step	Calculation
Current (I)	5 amperes
Distance from wire (r)	0.2 meters
Permeability of free space (μ₀)	$4π \times 10^{-7} \, T \cdot m/A$
Magnetic Field Calculation	$B = \frac{4π \times 10^{-7} \times 5}{2 \pi \times 0.2}$
Result	$B = 5 \times 10^{-6} \, T$

Answer: The magnetic field is 5 μT.

Example 2:

Step	Calculation
Current (I)	10 amperes
Distance from wire (r)	0.1 meters
Permeability of free space (μ₀)	$4π \times 10^{-7} \, T \cdot m/A$
Magnetic Field Calculation	$B = \frac{4π \times 10^{-7} \times 10}{2 \pi \times 0.1}$
Result	$B = 2 \times 10^{-5} \, T$

Answer: The magnetic field is 20 μT.

What is Ampere’s Law Calculator?

An Ampere’s Law Calculator assists in the evaluation of the magnetic field that is created by an electric current.  Ampere’s Law relates the integrated magnetic field around a closed loop to the electric current that is passing through the loop. It is widely used in electromagnetism to calculate the magnetic fields of coils, solenoids, and current-carrying wires.

This law is often used to calculate the magnetic field around current-carrying wires or solenoids. For example, in a solenoid, the magnetic field inside is given by:

B = μ₀ * n * I

Where n is the number of turns per unit length, and I is the current through the solenoid.

Example:

To calculate the magnetic field for a solenoid with 500 turns per meter carrying 2A of current, you can use the formula:

B = (4π × 10⁻⁷ T·m/A) * 500 * 2 = 1.26 × 10⁻³ T (Tesla)

Luckily, the calculators like the Ampere’s Law calculator with steps, magnetic field calculator for coils, or solenoid magnetic field calculators has the power to simplify this process by automating these calculations with ease and accuracy.

Final Words:

On the whole, you can use these tools to better understand applications in fields like electromagnetism. No matter if you’re studying for Class 12 or solving numericals that are related to Ampere’s Law in various contexts, these tools are your saviors.