Author Question: An uncharged 30.0-F capacitor is connected in series with a 25.0- resistor, a DC battery, and an ... (Read 78 times)

kodithompson

  • Hero Member
  • *****
  • Posts: 566
An uncharged 30.0-F capacitor is connected in series with a 25.0- resistor, a DC battery, and an open switch. The battery has an internal resistance of 10.0  and the open-circuit voltage across its terminals is 50.0 V.
 
  The leads have no appreciable resistance. At time t = 0, the switch is suddenly closed.
  (a) What is the maximum current through the 25.0- resistor and when does it occur (immediately after closing the switch or after the switch has been closed for a long time)?
  (b) What is the maximum charge that the capacitor receives?
  (c) When the current in the circuit is 0.850 A, how much charge is on the plates of the capacitor?

Question 2

A wire, 6.0 m long, with a mass of 10 g, is under tension. A transverse wave is propagated on the wire, for which the frequency is 280 Hz, the wavelength is 0.60 m, and the amplitude is 8.4 mm.
 
  The time, for a crest of the transverse wave to travel the length of the wire, in ms, is closest to: A) 36
  B) 31
  C) 40
  D) 44
  E) 49



aadams68

  • Sr. Member
  • ****
  • Posts: 317
Answer to Question 1

(a) 1.43 A, immediately after closing the switch
(b) 1500 C (c) 608 C

Answer to Question 2

A



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

According to the CDC, approximately 31.7% of the U.S. population has high low-density lipoprotein (LDL) or "bad cholesterol" levels.

Did you know?

People about to have surgery must tell their health care providers about all supplements they take.

Did you know?

The Babylonians wrote numbers in a system that used 60 as the base value rather than the number 10. They did not have a symbol for "zero."

Did you know?

This year, an estimated 1.4 million Americans will have a new or recurrent heart attack.

Did you know?

Parkinson's disease is both chronic and progressive. This means that it persists over a long period of time and that its symptoms grow worse over time.

For a complete list of videos, visit our video library