If you could help me out with 10 e) please The capacitance of the variable capac
ID: 1530653 • Letter: I
Question
If you could help me out with 10 e) please
The capacitance of the variable capacitor or a radio can be changed from 30 to 130 pF by turning the dial from 0 degree to 180 degree. With the dial set at 180 degree, the capacitor is connected to a 170 V battery. After charging, the capacitor is disconnected from the battery and the dial is turned to 0 degree. What is the charge on the capacitor now? What is the potential difference between the plates of the capacitor when the dial rends 100 degree assuming the dial is linearly calibrated? What is the energy stored in the capacitor at this position? How much work is required to turn the dial from 0 degree to 100 degree, if friction is neglected? Select True or False. Less charge would have accumulated on the capacitor if it had been charged with the dial in the 0 degree position. The electrostatic energy stored in the capacitor decreased when the dial was turned from 108 to 0 degrees. The voltage across the capacitor was constant even when the capacitance was varied. The energy stored in the capacitor remained constant when the capacitance was varied. The charge on the capacitor increased when the capacitance was varied.Explanation / Answer
10 e) for the true and fals e
true ... at 0 degree capacitance is less that gives less charge
True ... as the capacitance is decreasing
True , as it is connected to a battery
False ... the energy will change as the capacitance is changing
False .. as the capacitance is decreasing , the charge on the capacitor will also decrease