According to Ampere's Law, what is the magnetic field inside a long straight con
Practice Questions
Q1
According to Ampere's Law, what is the magnetic field inside a long straight conductor carrying current I?
Zero
μ₀I/2πr
μ₀I/4πr
μ₀I/πr
Questions & Step-by-Step Solutions
According to Ampere's Law, what is the magnetic field inside a long straight conductor carrying current I?
Step 1: Understand that a long straight conductor is a wire that carries an electric current (I).
Step 2: Recall Ampere's Law, which relates the magnetic field around a conductor to the current flowing through it.
Step 3: Recognize that the magnetic field is created by the movement of electric charges (the current).
Step 4: Visualize the conductor as having many small sections, each contributing to the magnetic field.
Step 5: Note that inside the conductor, the contributions to the magnetic field from opposite sides of the wire cancel each other out.
Step 6: Conclude that because of this cancellation, the total magnetic field inside the long straight conductor is zero.
Ampere's Law – Ampere's Law relates the integrated magnetic field around a closed loop to the electric current passing through the loop.
Magnetic Field in Conductors – The magnetic field inside a long straight conductor carrying current is determined by the distribution of current and the geometry of the conductor.
