What is the magnetic field inside a long, straight solenoid carrying current I?

What is the magnetic field inside a long, straight solenoid carrying current I?

Correct Answer: B = μ₀nI

Step 1: Understand what a solenoid is. A solenoid is a long coil of wire that creates a magnetic field when an electric current flows through it.
Step 2: Identify the current (I) flowing through the solenoid. This is the electric current that generates the magnetic field.
Step 3: Determine the number of turns per unit length (n). This means how many loops of wire are in a certain length of the solenoid.
Step 4: Know the constant μ₀, which is called the permeability of free space. It is a constant value used in magnetic field calculations.
Step 5: Use the formula B = μ₀nI to calculate the magnetic field (B) inside the solenoid. Here, you multiply μ₀ by n and then by I.

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