When the magnetic flux changes by 8 * 10-3Vb, an induction EMF of 20 V is excited
| September 20, 2021 | education
When the magnetic flux changes by 8 * 10-3Vb, an induction EMF of 20 V is excited in the conductor circuit covering this flux. During what time did the magnetic flux change?
These tasks: ΔФ (change in the magnetic flux in the conductor circuit) = 8 * 10-3 Wb; εi (EMF of induction that arose in the circuit) = 20 V.
The time of the change in the magnetic flux is determined using the Faraday law of electromagnetic induction: | εi | = | ΔФ / Δt |, whence Δt = ΔФ / εi.
Calculation: Δt = 8 * 10-3 / 20 = 0.0004 s (0.4 ms)
Answer: The change in the magnetic flux in the conductor circuit occurred in 0.4 ms.
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