Capacitors in combination: In the circuit shown in the figure, the capacitors are initially uncharged. The switch is first thrown to position A and kept there for a long time. It is then thrown to position B. Let the charges on the capacitors be Q1, Q2, and Q3 and the potential differences across them be V1, V2, and V3. Which of the following conditions must be true with the switch in position B?
Read DetailsEnergy in capacitors: Equal but opposite charges Q are placed on the square plates of an air-filled parallel-plate capacitor. The plates are then pulled apart to twice their original separation, which is small compared to the dimensions of the plates. Which of the following statements about this capacitor are true? (There may be more than one correct choice.)
Read DetailsSpheres of charge: A nonconducting sphere contains positive charge distributed uniformly throughout its volume. Which statements about the potential due to this sphere are true? All potentials are measured relative to infinity. (There may be more than one correct choice.)
Read DetailsYou have $25,000 in a brokerage account now, and you plan to deposit an additional $10,000 at the end of every future year, starting one year from today, and your goal is to accumulate $900,000 in 30 years. What annual interest rate (APR) must you earn for this to occur?
Read DetailsYou have $25,000 in a brokerage account now, and you plan to deposit an additional $10,000 at the end of every future year, starting one year from today, and your goal is to accumulate $900,000 in 20 years. What annual interest rate (APR) must you earn for this to occur?
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