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  1. AP Physics C E M
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Electromagnetic Induction

Question 1
Physics C: E&M (2025)APExam Style
1 mark

If the voltage across a capacitor in an LC circuit is at its maximum value VmaxV_{max}Vmax​, what is the expression for the maximum current, ImaxI_{max}Imax​, in terms of capacitance CCC and inductance LLL?

Question 2
Physics C: E&M (2025)APExam Style
1 mark

What quantity in a mass-spring system is analogous to the charge in an LC circuit undergoing simple harmonic motion?

Question 3
Physics C: E&M (2025)APExam Style
1 mark

An LC circuit needs to be designed to oscillate at a specific angular frequency ω0\omega_0ω0​. Due to budget constraints, the total cost of the inductor and capacitor must be minimized. If the cost of the inductor is proportional to its inductance (CostL=kLCost_L = kLCostL​=kL) and the cost of the capacitor is proportional to its capaci...

Question 4
Physics C: E&M (2025)APExam Style
1 mark

In an LC circuit, the initial charge on the capacitor is Q0Q_0Q0​. At a later time, the energy stored in the capacitor is one-fourth of the total energy. What is the charge on the capacitor at that time?

Question 5
Physics C: E&M (2025)APExam Style
1 mark

Which of the following differential equations correctly describes the charge qqq in an LC circuit?

Question 6
Physics C: E&M (2025)APExam Style
1 mark

What is the angular frequency ω\omegaω of an LC circuit with inductance LLL and capacitance CCC?

Question 7
Physics C: E&M (2025)APExam Style
1 mark

If the inductance in an LC circuit is doubled and the capacitance is halved, what happens to the angular frequency?

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Question 8
Physics C: E&M (2025)APExam Style
1 mark

An LC circuit has an initial charge Q0Q_0Q0​ on the capacitor. Find the expression for the charge q(t)q(t)q(t) on the capacitor as a function of time, assuming q(0)=Q0q(0) = Q_0q(0)=Q0​ and I(0)=0I(0) = 0I(0)=0.

Question 9
Physics C: E&M (2025)APExam Style
1 mark

In an LC circuit, energy is constantly exchanged between which two components?

Question 10
Physics C: E&M (2025)APExam Style
1 mark

In an LC circuit, when the capacitor is fully charged, where is all the energy stored?