An inventor has a rough design for a light fixture with a dimmer knob. The fixture contains a 50-µF capacitor, an...anml_luvr
An inventor has a rough design for a light fixture with a dimmer knob. The fixture contains a 50-µF capacitor, an inductor, and a 100-W light bulb (the resistor), forming a series RCL circuit. The idea is that when the dial is set to MAX, the resonant frequency of the circuit is 60 Hz, the frequency of the standard household ac service in the US. Thus, the circuit is at resonance, and the light bulb operates at 100 W. Turning the dimmer knob down from MAX gradually pulls a thin cardboard sheet (? = 3.3) out from between the capacitor's plates, decreasing its capacitance and thereby changing the circuit's resonant frequency. This lowers the power output of the bulb, dimming it. When the knob is turned to MIN, the cardboard sheet is completely out of the capacitor, and the bulb is meant to be operating at just 40 W. (The OFF setting opens the circuit, but that's unrelated to the question.) Question: will the fixture work as designed? If not, should a material with a higher or lower dielectric constant should be used in constructing the capacitor?
- 9 years ago
- what are particles made of protiens?
- Consider the symbolic importance of the stone in "The Story of the Stone". How is the jade stone important to...
- find the point of intersection of lines 3=6x-y and 3x-2y=24
- x squared minus 3x plus 4 equals 0
- how do you factor trinomials
- Which of the following were major themes/subjects of Romantic artists? a. landscapes and depictions of nature. b. Madonnas and...
- at the beginning of the summer molly decided to add a little money into her savings account every week. after...
- how does zues become king of the gods
- who the heck is beytovan