When a strip of magnetic material, variably magnetized, is embedded in a plastic card that is moved past a small coil of wire, what happens in the coil? What is a practical application of this?
To explain: the change in the coils and its practical application.
Answer to Problem 39A
The voltage induces in the coil and the practical example is the ATM machine which reads the credit/debit cards.
Explanation of Solution
Introduction:
When there is a change in the magnetic field, the voltage induces.
The magnetic material is magnetized variably the voltage induces as there is a change in the magnetic field. This has a wide practical application as in the ATM, the credits cards, and debit cards read by this machine using this same concept.
Conclusion:
The overheating of the motor as the more heat energy is developed as all the electrical energy is converted into heat energy when the motor does not rotate.
Chapter 37 Solutions
Conceptual Physics: The High School Physics Program
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