A 4.60- µF capacitor that is initially uncharged is connected in series with a 7.50-kΩ resistor and an emf source with ε = 245 V and negligible internal resistance. Just after the circuit is completed, what are (a) the voltage drop across the capacitor; (b) the voltage drop across the resistor; (c) the charge on the capacitor; (d) the current through the resistor? (e) A long time after the circuit is completed (after many time constants) what are the values of the quantities in parts (a)-(d)?
A 4.60- µF capacitor that is initially uncharged is connected in series with a 7.50-kΩ resistor and an emf source with ε = 245 V and negligible internal resistance. Just after the circuit is completed, what are (a) the voltage drop across the capacitor; (b) the voltage drop across the resistor; (c) the charge on the capacitor; (d) the current through the resistor? (e) A long time after the circuit is completed (after many time constants) what are the values of the quantities in parts (a)-(d)?
A 4.60-µF capacitor that is initially uncharged is connected in series with a 7.50-kΩ resistor and an emf source with ε = 245 V and negligible internal resistance. Just after the circuit is completed, what are (a) the voltage drop across the capacitor; (b) the voltage drop across the resistor; (c) the charge on the capacitor; (d) the current through the resistor? (e) A long time after the circuit is completed (after many time constants) what are the values of the quantities in parts (a)-(d)?
. An RC circuit with a 54.0 V power source is connected to a fluorescent lamp as shown in the
ngure. The lamp L turns on when the voltage across the capacitor reaches 45.0V, which
happens after 0.65 seconds after the switch is closed. If R =
the capacitance C? (b) If we must switch the lamps 3 times in a second, what should be the
value of capacitance? (c) What is the charge on the capacitor when the lamp just flashes in
3MQ, (a) what is the value of
both the cases?
ww
R
54.0V
What is the smallest capacitor needed in a computer power supply in order to produce at least 4.45 V for 0.21 s after the power goes off? Assume that the resistance of all the components of the computer motherboard is 6 Ohms and that the capacitor and motherboard are powered with a 5-Volt power supply.
The switch in an RC circuit (with voltage AV, resistor R, and capacitor C) closes at t = 0s and, after a
very long time, the capacitor is fully charged. Find expressions for
a) the total energy supplied by the battery as the capacitor is being charged
b) total energy dissipated by the resistor as the capacitor is being charged, and
c) the energy stored in the capacitor when it is fully charged.
d) Do your results for parts (a) to (c) show that energy is conserved? Explain.
Your expressions for parts (a)-(c) will be in terms of AV, R, and C.
Chapter 26 Solutions
University Physics with Modern Physics (14th Edition)
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DC Series circuits explained - The basics working principle; Author: The Engineering Mindset;https://www.youtube.com/watch?v=VV6tZ3Aqfuc;License: Standard YouTube License, CC-BY