כיצד לחשב את Faradays Law
learn.whatIsHeading
Faraday's law relates changing magnetic flux to induced electromotive force. It's the principle behind transformers, generators, and induction cooktops.
נוסחה
The calculator applies EMF = -dΦ/dt
- EMF
- -dΦ/dt — -dΦ/dt
מדריך שלב אחר שלב
- 1Enter magnetic flux change and time interval
- 2The calculator applies EMF = -dΦ/dt
- 3Results show induced voltage magnitude
Worked Examples
קלט
ΔΦ = 0.1 Wb, Δt = 0.001 s
תוצאה
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.
מוכן לחשב? נסה את מחשבון Faradays Law החינמי
נסה זאת בעצמך →