Jak vypočítat Faradays Law
Co je Faradays Law?
Faraday's law relates changing magnetic flux to induced electromotive force. It's the principle behind transformers, generators, and induction cooktops.
Vzorec
The calculator applies EMF = -dΦ/dt
- EMF
- -dΦ/dt — -dΦ/dt
Průvodce krok za krokem
- 1Enter magnetic flux change and time interval
- 2The calculator applies EMF = -dΦ/dt
- 3Results show induced voltage magnitude
Worked Examples
Vstup
ΔΦ = 0.1 Wb, Δt = 0.001 s
Výsledek
EMF = 100 V
Rapid flux change induces high voltage
Common Mistakes to Avoid
- ✕Ignoring the rate of change; steady flux produces no EMF
- ✕Forgetting that area and angle both affect flux
Frequently Asked Questions
What does the negative sign mean?
It represents Lenz's law: induced current opposes the change causing it.
How do transformers use Faraday's law?
Changing current in primary coil creates changing magnetic field, inducing voltage in secondary coil.
Jste připraveni počítat? Vyzkoušejte bezplatnou kalkulačku Faradays Law
Zkuste to sami →