A cylindrical Gaussian surface encloses a long straight wire carrying a current. What is the electric field at a distance r from the wire?
Practice Questions
1 question
Q1
A cylindrical Gaussian surface encloses a long straight wire carrying a current. What is the electric field at a distance r from the wire?
0
I/(2πε₀r)
λ/(2πε₀r)
σ/(2ε₀)
Gauss's law applies to electric fields, not magnetic fields. The electric field around a current-carrying wire is not defined by Gauss's law.
Questions & Step-by-step Solutions
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Q
Q: A cylindrical Gaussian surface encloses a long straight wire carrying a current. What is the electric field at a distance r from the wire?
Solution: Gauss's law applies to electric fields, not magnetic fields. The electric field around a current-carrying wire is not defined by Gauss's law.
Steps: 4
Step 1: Understand that we are dealing with a long straight wire that carries an electric current.
Step 2: Recognize that the electric field around a current-carrying wire is not the same as the magnetic field.
Step 3: Remember that Gauss's law is used to calculate electric fields, but it is not applicable for the electric field around a current-carrying wire.
Step 4: Conclude that the electric field at a distance r from the wire is not defined by Gauss's law.
