Electronics
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5 Questions
Question 1 of 5
According to Faraday's law, what determines the instantaneous voltage (Vs) across the secondary coil?
Faraday's law states Vs = Ns(dΦ/dt), where Ns is the number of secondary turns and dΦ/dt is the rate of change of magnetic flux.
Question 2 of 5
What does 'Φ' represent in the key formula V<sub>S</sub> = N<sub>S</sub> (dΦ/dt)?
Φ represents magnetic flux, which is the amount of magnetic field passing through an area.
Question 3 of 5
In an ideal transformer, what is the relationship of magnetic flux between the primary and secondary coils?
In an ideal transformer, all the magnetic flux generated by the primary coil is linked with the secondary coil.
Question 4 of 5
How is the magnetic flux (Φ) calculated?
Magnetic flux (Φ) = B * A, where B is the magnetic flux density, and A is the cross-sectional area.
Question 5 of 5
What determines the voltage stepping (step-up or step-down) in a transformer?
The ratio of the number of turns in the primary and secondary coils (turns ratio) determines whether the voltage is stepped up or down.
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