The two metal objects in the figure have net charges of +100 pC and -100 pC, whi

Question

The two metal objects in the figure have net charges of +100 pC and -100 pC, which result in a 30 V potential difference between them. (a) What is the capacitance in picofarads of the system? (b) If the charges are changed to +280 pC and -280 pC, what does the capacitance in picofarads become? (c) What does the potential difference become?

The two metal objects in the figure have net charges of +100pC and -100pC, which result in a 30 V potential difference between them. (a) What is the capacitance in picofarads of the system? (b) If the charges are changed to +280 pC and -280 pC, what does the capacitance in pico farads become? (c) What does the potential difference become?

Explanation / Answer

a) C = Q / V = 100 * 10E-12 / 30 = 3.33 * 10E-12 = 3.33 pf

b) the capacitance is determined by the physical configuration and

is still 3.33 pf

c) V = Q / C = 280 * 10E-12 / 3.33 * 10E-12 = 84.1 V

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.