To find the initial energy stored in the inductor and time taken to increase the energy by a factor of 5 from the initial value.
Answer to Problem 46P
Solution:
The initial energy stored in the inductor is and the time taken to increase the energy from the initial value is seconds.
Explanation of Solution
Inductance,
Current,
The energy stored in the magnetic field is given by
Now, to determine the increase in energy by a factor of 5
This is the increase in energy and now we determine the current in the inductor after the increase in energy.
Now, the change in current is given by
It is given that the current is increasing at the rate of The time taken to increase the energy from the initial value
Therefore, of energy is stored in the magnetic field.
Chapter 21 Solutions
Physics: Principles with Applications
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