Question

According to Gauss's Law for Magnetic Fields, all magnetic field lines form a complete loop. Therefore, the direction of the magnetic field $\vec{B}$ points from $\quad$ pole to $\longrightarrow$ pole outside of an ordinary bar magnet and from pole to pole inside the magnet. a) north, south, north, south c) south, north, south, north b) north, south, south, north d) south, north, north, south

Name: Problem 8, Chapter 31: University Physics with Modern Physics
Uploaded: 2021-05-19T05:26:55-08:00
Duration: 1 min 12 s
Channel: Ajay Singhal
Description: According to Gauss's Law for Magnetic Fields, all magnetic field lines form a complete loop. Therefore, the direction of the magnetic field B⃗ points from pole to ⟶pole outside of an ordinary bar magnet and from pole to pole inside the magnet. a) north, south, north, south c) south, north, south, north b) north, south, south, north d) south, north, north, south

   According to Gauss's Law for Magnetic Fields, all magnetic field lines form a complete loop. Therefore, the direction of the magnetic field $\vec{B}$ points from $\quad$ pole to $\longrightarrow$ pole outside of an ordinary bar magnet and from pole to pole inside the magnet.
a) north, south, north, south
c) south, north, south, north
b) north, south, south, north
d) south, north, north, south

University Physics with Modern Physics

Wolfgang Bauer, Gary… 2nd Edition

Chapter 31, Problem 8

Instant Answer

Solved by Expert Ajay Singhal

05/19/2021

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This means that the magnetic field lines always start from one pole and end at the other pole. Show more…

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According to Gauss's Law for Magnetic Fields, all magnetic field lines form a complete loop. Therefore, the direction of the magnetic field $\vec{B}$ points from $\quad$ pole to $\longrightarrow$ pole outside of an ordinary bar magnet and from pole to pole inside the magnet. a) north, south, north, south c) south, north, south, north b) north, south, south, north d) south, north, north, south

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Key Concepts

Magnetic Dipole and Pole Convention

In a magnetic dipole, such as a bar magnet, one end is labeled the north pole and the other the south pole. Conventionally, outside the magnet, the magnetic field lines exit the north pole and enter the south pole, while inside the magnet, they travel from the south pole back to the north pole, completing the loop.

Gauss's Law for Magnetic Fields

Gauss's Law for Magnetic Fields states that the net magnetic flux through any closed surface is zero. This implies that there are no isolated magnetic charges (monopoles), and magnetic field lines are continuous loops without a beginning or an end.

Magnetic Field Lines

Magnetic field lines are a visual representation of the magnetic field, indicating both its direction and relative strength. They always form closed loops, emerging from one end of a magnet and returning to the other, which reflects the law of zero net magnetic flux.

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