- #1

Student149

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Consider two bar electromagnets that can simulate bar magnets M1 and M2, placed end to end at distance D apart (North Pole of M1 facing South Pole of M2). Magnet M1 is 'fixed' to a base. Assuming both electromagnets have the Current I1 and Voltage V1.

The magnets will attract each other and M2 will travel the distance D in some time T1.

How will the the Net effective force of attraction (considering the effects of Back EMF) thus time taken, change with change in:

- Current
- Voltage
- Important: We have to keep in mind the 'Back EMF' generated due to motion, that negates this attractive motion and how it changes with Current and Voltage (the part which I am unsure of).

Q2. In other words how does changing the parameters, affects the time M2 will take to travel distance D?