A long straight conductor carries a current I. What is the magnetic field at a d
Practice Questions
Q1
A long straight conductor carries a current I. What is the magnetic field at a distance r from the wire?
μ₀I/(2πr)
μ₀I/(4πr)
μ₀I/(πr)
μ₀I/(2r)
Questions & Step-by-Step Solutions
A long straight conductor carries a current I. What is the magnetic field at a distance r from the wire?
Step 1: Identify the long straight conductor that carries a current I.
Step 2: Understand that the magnetic field (B) is created around the conductor due to the current flowing through it.
Step 3: Recognize that the distance from the wire where you want to find the magnetic field is denoted as r.
Step 4: Use the formula for the magnetic field around a long straight conductor, which is B = μ₀I/(2πr).
Step 5: In the formula, μ₀ is a constant called the permeability of free space, I is the current, 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 B.
Magnetic Field Around a Conductor – The magnetic field generated by a long straight conductor carrying current is inversely proportional to the distance from the wire and directly proportional to the current.
