What is the formula for the magnetic field (B) inside a solenoid?

What is the formula for the magnetic field (B) inside a solenoid?

Step 1: Understand what a solenoid is. A solenoid is a coil of wire that creates a magnetic field when an electric current passes through it.
Step 2: Identify the variables in the formula. The formula for the magnetic field (B) inside a solenoid is B = μ₀(nI).
Step 3: Learn what μ₀ is. μ₀ is a constant called the permeability of free space, which is approximately 4π x 10^-7 T·m/A.
Step 4: Understand what 'n' represents. 'n' is the number of turns of wire per unit length of the solenoid, usually measured in turns per meter.
Step 5: Know what 'I' stands for. 'I' is the electric current flowing through the wire, measured in amperes (A).
Step 6: Combine the variables in the formula. To find the magnetic field inside the solenoid, multiply μ₀ by 'n' and then by 'I'.

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