The magnetic field due to a straight current-carrying conductor at a distance r
Practice Questions
Q1
The magnetic field due to a straight current-carrying conductor at a distance r from the wire is given by which formula? (2019)
B = μ₀I/(2πr)
B = μ₀I/(4πr²)
B = μ₀I/(2r)
B = μ₀I/(πr)
Questions & Step-by-Step Solutions
The magnetic field due to a straight current-carrying conductor at a distance r from the wire is given by which formula? (2019)
Step 1: Understand that a straight current-carrying conductor creates a magnetic field around it.
Step 2: Identify the variables in the formula: B is the magnetic field, μ₀ is the permeability of free space, I is the current flowing through the wire, and r is the distance from the wire.
Step 3: Recognize that the formula for the magnetic field (B) at a distance r from the wire is B = μ₀I/(2πr).
Step 4: Remember that this formula shows how the magnetic field strength decreases as you move further away from the wire (as r increases).
