Electro Magnetic Induction And Alternating Currents Question 217

Question: A capacitor in an LC oscillator has a maximum potential difference of 17 V and a maximum energy of $ 160\mu J $ . When the capacitor has a potential difference of 5V and an energy of $ 10\mu J, $ what is the energy stored in the magnetic field?

Options:

A) $ 10\mu J $

B) $ 150\mu J $

C) $ 160\mu J $

D) $ 170\mu J $

Show Answer

Answer:

Correct Answer: B

Solution:

  • $ U_{e}+U_{m}=160\therefore U_{m}=160-U_{e}=160-10 $

$ =150\mu J. $



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