Post-UTME Physics 2011 Objective — Question 1
Question 1 of 16 from the Post-UTME Screening (Post-UTME) Physics 2011 Objective paper, with the correct answer and a full explanation.
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A series RLC circuit has independence 12mH, capacitance 1.6 micro-F and resistance 1.5 ohm. Find the time when the amplitude of the charge oscillating will be 50% of initial value
- A. 11msCorrect
- B. 10ms
- C. 8ms
- D. 9ms
Explanation
Using the exponential decay formula for a damped RLC circuit's charge amplitude, the time for 50% decay works out closest to 11ms given the stated component values.
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