Question 1

What is magnetic flux and what units are used?

Accepted Answer

Magnetic flux (Φ) = field × area, measuring total field through a surface. SI: weber (Wb). CGS: maxwell (Mx). 1 weber = 10^8 maxwell. Used in transformer and motor design.

Question 2

How is magnetic flux related to voltage?

Accepted Answer

Faradays law: EMF = -dΦ/dt. Changing flux by 1 weber in 1 second induces 1 volt. This is why flux matters for generators, transformers, and induction motors.

Question 3

What's a typical magnetic field strength?

Accepted Answer

Earth's field: 25-65 microtesla. Fridge magnet: 5 millitesla. MRI machine: 1.5-3 tesla. Strongest lab magnets: 45+ tesla.

Question 4

Why do we have both Tesla and Gauss?

Accepted Answer

Tesla is the SI unit; Gauss is the older CGS unit. 1 Tesla = 10,000 Gauss. Both remain in use across different fields and regions.

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