What is the magnetic field due to a straight current-carrying conductor at a dis

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Question: What is the magnetic field due to a straight current-carrying conductor at a distance \'r\' from it? (2020)

Options:

Correct Answer: μ₀I/2πr

Exam Year: 2020

Solution:

The magnetic field due to a straight current-carrying conductor is given by B = μ₀I/2πr.

What is the magnetic field due to a straight current-carrying conductor at a distance 'r' from it? (2020)

What is the magnetic field due to a straight current-carrying conductor at a distance 'r' from it? (2020)

Step 1: Understand that a straight current-carrying conductor is a wire through which electric current flows.
Step 2: Recognize that this wire creates a magnetic field around it.
Step 3: Identify the distance 'r' from the wire where you want to find the magnetic field.
Step 4: Know that the formula to calculate the magnetic field (B) at distance 'r' from the wire is B = μ₀I/2πr.
Step 5: In the formula, μ₀ is a constant called the permeability of free space, I is the current flowing through the wire, and r is the distance from the wire.
Step 6: Plug in the values of I and r into the formula to calculate the magnetic field.

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