If a long straight conductor carries a current I, what is the magnetic field at
Practice Questions
Q1
If a long straight conductor carries a current I, what is the magnetic field at a distance r from the wire?
μ₀I/(2πr)
μ₀I/(4πr²)
μ₀I/(2r)
μ₀I/(πr²)
Questions & Step-by-Step Solutions
If a long straight conductor carries a current I, what is the magnetic field at a distance r from the wire?
Step 1: Understand that a long straight conductor is a wire that carries an electric current.
Step 2: Know that when current flows through the wire, it creates a magnetic field around it.
Step 3: Identify the distance from the wire where you want to find the magnetic field, which is denoted as 'r'.
Step 4: Recall Ampere's Law, which relates the magnetic field to the current and distance from the wire.
Step 5: Use the formula B = μ₀I/(2πr) to calculate the magnetic field, where B is the magnetic field, μ₀ is the permeability of free space, I is the current, and r is the distance from the wire.
Ampere's Law – Ampere's Law relates the magnetic field around a conductor to the current flowing through it.
Magnetic Field Calculation – Understanding how to calculate the magnetic field at a distance from a current-carrying wire.
Inverse Relationship – The magnetic field strength decreases inversely with distance from the wire.