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Fundamental Properties of AC Circuits/Lab

# Inductance

1. Calculate the inductance of a coil that induces 120V when the current through it changes at a rate of 5A/s.
2. Calculate the inductance of a coil that induces 850V when the current through it changes at a rate of 30mA in 2Âµs.
3. Given an iron core with 200 turns, a length of 0.35m and an area of 3×10-4m2, determine the inductance.
4. A 10:1 transformer has NP = 300, VP = 240V and IP = 2A.Determine NS, VS, and Is.
5. Four inductors of values 6mH, 7mH, 9mH, and 10mH are connected in series.Determine the total inductance.
6. Four inductors of values 6mH, 7mH, 9mH, and 10mH are connected in parallel.Determine the total equivalent inductance.
7. Calculate the energy store in a 20mH inductor with a current of 3mA flowing through it.

# Transformers

1. Watch the videos
• Week 4 Video Lecture â€“ Multisim Transformers
2. Consider the circuit demonstrated in this weekâ€™s presentations. With the turns ratio modified to 20:1, calculate the following values of Vs and Is for the given values of RL in the table below: