3) You are given the following circuit with an uncharged capacitor. At time t = 0 the switch is connected, and the circuit is completed. Ro Vo V1= 3 V R1 = 48 Q Cı= 12 µF Aplates/sheets =2.63 m², d = 2x10-6 m; k = 1 Vo= 12 V Ro= 35 N a. Write the only loop law for this problem! b. Solve the circuit (determine all currents or charges and voltages on all devices!) for t = 0. c. Determine the power dissipated in the resistor zero (RO) for t = 0. d. Solve the circuit (determine all currents or charges and voltages on all devices!) for t> 0 (after waiting a “long" time). You are putting the circuit away when you accidentally knock it off the table, and it hits the floor hard. When you pick it up the only thing that looks damaged is the capacitor (it looks crushed/smooshed). You plug it in anyways and the circuit runs. However, you now see after waiting a long time a charge of 340 µC is stored on the capacitor. e. Determine the new thickness of the capacitor after being dropped.

3) You are given the following circuit with an uncharged capacitor. At time t = 0 the switch is connected, and the circuit is completed. Ro Vo V1= 3 V R1 = 48 Q Cı= 12 µF Aplates/sheets =2.63 m², d = 2x10-6 m; k = 1 Vo= 12 V Ro= 35 N a. Write the only loop law for this problem! b. Solve the circuit (determine all currents or charges and voltages on all devices!) for t = 0. c. Determine the power dissipated in the resistor zero (RO) for t = 0. d. Solve the circuit (determine all currents or charges and voltages on all devices!) for t> 0 (after waiting a “long" time). You are putting the circuit away when you accidentally knock it off the table, and it hits the floor hard. When you pick it up the only thing that looks damaged is the capacitor (it looks crushed/smooshed). You plug it in anyways and the circuit runs. However, you now see after waiting a long time a charge of 340 µC is stored on the capacitor. e. Determine the new thickness of the capacitor after being dropped.

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter20: Induced Voltages And Inductance

Section: Chapter Questions

Problem 10CQ: The switch S in Figure 20.27 is closed at t = 0 and the current at a reference time tref 0 is Iref....

See similar textbooks

Similar questions

Consider the circuit below, (a) What is the initial current through resistor R2? when the switch is closed? (b) What is die current through resistor R2 when the capacitor is fully charged, long after die switch is closed? (c) What happens if the switch is opened after it has been closed for some rime? (d) If the switch has been closed for a time period long enough for the capacitor to become fully charged, and then the switch is opened, how long before the current through resistor R1 reaches half of its initial value?
An electronic apparatus may have large capacitors at high voltage in the power supply section, presenting a shock hazard even when the apparatus is switched off. A “bleeder resistor" is therefore placed across such a capacitor, as shown schematically in Figure 21.50, to bleed the charge from it after the apparatus is off. Why must the bleeder resistance be much greater than the effective resistance of the rest of the circuit? How does this affect the time constant for discharging the capacitor?
Two different electrical devices have the same power consumption, but one is meant to be operated on 12G-V AC and the other on 240-V AC. (a) What is the ratio of their resistances? (b) What is the ratio of their currents? (c) Assuming its resistance is unaffected, by what factor will the power increase if a 120-V AC device is connected to 240-V AC?
A young man owns a canister vacuum cleaner marked 535 W [at] 120 V and a Volkswagen Beetle, which he wishes to clean. He parks the car in his apartment parking lot and uses an inexpensive extension cord 15.0 m long to plug in the vacuum cleaner. You may assume the cleaner has constant resistance, (a) If the resistance of each of the two conductors in the extension cord is 0.900 , what is the actual power delivered to the cleaner? (b) If instead the power is to be at least 525 W, what must be the diameter of each of two identical copper conductors in the cord he buys? (c) Repeat part (b) assuming the power is to be at least 532 W.
Find the current through a person and identify the likely effect on her if she touches a 120-V AC source: (a) if she is standing on a rubber mat and offers a total resistance of 300 k; (b) if she is standing barefoot on wet grass and has a resistance of only 4000 k .
Is a circuit breaker wired (a) in series with the device it is protecting, (b) in parallel, or (c) neither in series or in parallel, or (d) is it impossible to tell?
Using information in Example 20.6, what would the Hall voltage be if a 2.00T field is applied across a 10-gauge copper wire (2.588 mm in diameter) carrying a 20.0-A current?
While taking a bath, a person touches the metal case of a radio. The path through the person to the drainpipe and ground has a resistance of 4000- . What is the smallest voltage on the case of the radio that could cause ventricular fibrillation?
Integrated Concepts If you wish to take a picture of a bullet traveling at 500 m/s, then a very brief flash of light produced by an RC discharge through a flash tube can limit blurring. Assuming 1.00 mm of motion during one RC constant is acceptable, and given that the flash is driven by a 600F capacitor, what is the resistance in the flash tube?
A small office-building air conditioner operates or 408-V AC and consumes 50.0 kW. (a) What is its effective resistance? (b) What is the cost of running the air conditioner during a hot summer month when it is on 8.00 h per day for 30 days and electricity costs 9.00 cenls/kW h ?
The switch S in Figure 20.27 is closed at t = 0 and the current at a reference time tref 0 is Iref. If the circuit is changed as, described below and the switch is again dosed at t = 0, determine whether the current I at the same time would be greater than, less than, or equal to the original value of Iref. Indicate your answers wilt G. L. or E, respectively. (a) Both the battery voltage and the resistance R are doubled. (b) The inductance L b doubled. (c) The battery voltage . the resistance R, and the inductance L are each doubled. Figure 20.27 A series RL circuit. As the current increases toward its maximum value, the inductor produces an emf that opposes the increasing current.
The power dissipated in a resistor is given by P = V2/R, which means power decreases if resistance increases. Yet this power is also given by P = I2R, which means power increases if resistance increases. Explain why there is no contradiction here.