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Faraday's law relates changing magnetic flux to induced electromotive force. It's the principle behind transformers, generators, and induction cooktops.
Công thức
The calculator applies EMF = -dΦ/dt
- EMF
- -dΦ/dt — -dΦ/dt
Hướng dẫn từng bước
- 1Enter magnetic flux change and time interval
- 2The calculator applies EMF = -dΦ/dt
- 3Results show induced voltage magnitude
Ví dụ có lời giải
đầu vào
ΔΦ = 0.1 Wb, Δt = 0.001 s
Kết quả
EMF = 100 V
Rapid flux change induces high voltage
Lỗi thường gặp cần tránh
- ✕Ignoring the rate of change; steady flux produces no EMF
- ✕Forgetting that area and angle both affect flux
Câu hỏi thường gặp
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.
Sẵn sàng để tính toán? Dùng thử Máy tính Faradays Law miễn phí
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