Try it on paper first. A hint, the key idea and the worked solution are here when you need them.
A series circuit has H and . It is in resonance at rad/s. Find the capacitance, the quality factor, the bandwidth in rad/s, and the rms voltage across the capacitor at resonance when the source gives V. What does the bandwidth become if is doubled?
At resonance , so and . There , and . The quality factor is . The bandwidth is , or .
Have you tried it?
Work it out on paper first. It is fine to get stuck or make a mistake: that is how we learn. When you are ready, go through the solution one step at a time, and check each step against your own.
Step 1. The capacitance. We want , so .
Step 2. The quality factor. .
Step 3. The bandwidth. . Check: rad/s.
Step 4. The capacitor voltage. V.
Answer: , , rad/s and V.
What if? With the bandwidth is rad/s, twice as wide. The quality factor is , so the capacitor voltage at resonance falls to V.
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