A long straight conductor carrying current I produces a magnetic field B at a di
Practice Questions
Q1
A long straight conductor carrying current I produces a magnetic field B at a distance r from it. What is the expression for B?
μ₀I/(2πr)
μ₀I/(4πr)
μ₀I/(πr)
μ₀I/(8πr)
Questions & Step-by-Step Solutions
A long straight conductor carrying current I produces a magnetic field B at a distance r from it. What is the expression for B?
Step 1: Understand that a long straight conductor is a wire that carries an electric current (I).
Step 2: Recognize that this current creates a magnetic field around the wire.
Step 3: Identify the distance from the wire where you want to find the magnetic field (r).
Step 4: Learn that the strength of the magnetic field (B) depends on the amount of current (I) and the distance (r) from the wire.
Step 5: Use the formula for the magnetic field around a long straight conductor, which is B = μ₀I/(2πr).
Step 6: In this formula, μ₀ is a constant called the permeability of free space, which helps relate current to the magnetic field.
Magnetic Field due to a Current-Carrying Conductor – The relationship between the current flowing through a long straight conductor and the magnetic field it generates at a certain distance from it.
