It's known that over a particular closed Gaussian spherical shell, the upper hemisphere has a net magnetic flux of $- 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$ From this, the net magnetic flux of the lower hemisphere must be
A) $- 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$
B) $+ 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$
C) $0 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$
D) $- 47.0 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$

Question

Quizplus · Accepted Answer

Gauss's law for magnetism states that the net magnetic flux through any closed surface is zero. Therefore, if the upper hemisphere has a net magnetic flux of $- 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$, the lower hemisphere must have an equal and opposite flux to make the total flux zero, which is $+ 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$.

It's Known That Over a Particular Closed Gaussian Spherical Shell −23.5 T⋅m2- 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }−23.5 T⋅m2

It's Known That Over a Particular Closed Gaussian Spherical Shell $- 23.5 \mathrm {~T} \cdot \mathrm { m } ^ { 2 }$