Question

A lamp with a breakdown (threshold) voltage of 100 V is hooked in parallel to a...

A lamp with a breakdown (threshold) voltage of 100 V is hooked in parallel to a capacitor. The capacitor begins to charge from a 130 V power supply through a 2E6 ohm resistor.

a. If the light flashes 4 times per second, what is the capacitance of the capacitor?

b. Describe what happens as the light flashes (what happens to start the flash, what happens during the flash, what happens as the flash ends.)

Homework Answers

Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Consider the following parallel circuit. The voltage of the battery is 24 volts. Lamp 1 is...
Consider the following parallel circuit. The voltage of the battery is 24 volts. Lamp 1 is rated at 48 watts, and lamp 2 at 72 watts. a) What is the voltage drop (loss) across lamp 1, in volts? b) What is the voltage drop (loss) across lamp 2, in volts? c) What is the current which flows through lamp 1, in amps? d) What is the current that flows through lamp 2, in amps? e) Find the resistance of lamp...
A series circuit includes an AC power supply with peak voltage 5.4 V and frequency 100...
A series circuit includes an AC power supply with peak voltage 5.4 V and frequency 100 Hz, a 10-ohm resistor and a 120 uF capacitor. What is the impedance, phase angle, and maximum current? Sketch one cycle of the voltage and current as might be seen on an oscilloscope.
the lamp requires a voltage of 5 V and has a resistance of 10 ohms, and...
the lamp requires a voltage of 5 V and has a resistance of 10 ohms, and a current of 0.5 A. Consider a 2N3019, max Ic = 1A. The max power from data sheet is 800mW. Suppose Vcc=5 V. If you are designing the circuit, what should be the maximum resistance of the base resistor if beta= 10 for the resistor? the circuit digram Vi....R(resistor)...Transistor..connected with lamp and +Vcc(collector) and E connected with ground. draw the digram please.
Suppose you have a circuit with a 10 volt battery hooked up to a 100 ohm...
Suppose you have a circuit with a 10 volt battery hooked up to a 100 ohm light bulb and a variable resistor of R ohms. The light bulb and the resistor can be hooked up in series or parallel. Draw both these circuits and label them as series or parallel and with the values of each component. Now, solve for the current in the light bulb in each of these circuits for R = 10, 100, and 1000 Ohms. Given...
A camera flash gets its energy from a 150 μF capacitor and requires 170 V to...
A camera flash gets its energy from a 150 μF capacitor and requires 170 V to fire. a) If the capacitor is charged by a 200 V source through an 18 kΩ resistor, how long must the photographer wait between flashes? (Assume the capacitor is fully discharged with each flash.) b) Of the total energy drawn from a battery in charging an RC circuit, show that only half ends up as stored energy in the capacitor. Hint: What happens to...
. A series-parallel combination of resistors is created from 4 resistors, there is a 45 ohm...
. A series-parallel combination of resistors is created from 4 resistors, there is a 45 ohm resistor followed in series by a parallel combination of a 30 Ohm resistor on one branch, and a 10 Ohm and a 15 Ohm resistors in series on the other branch. The whole combination is attached to a 12 V battery. a) find the net resistance of the resistors to the current from the battery. b) What is the current in the 45 Ohm...
An AC source has a frequency f = 1200 HZ and peak voltage 3.5 V. It...
An AC source has a frequency f = 1200 HZ and peak voltage 3.5 V. It is connected in series to a resistor resistance R = 15 Ohms, an inductor of inductance L = 5 mH and a capacitor of capacitance C = 2 microfarads. How would you optimize the power factor ( make it equal to 1)? a. Add a  capacitor in series with the existing one b. Add a  capacitor in parallel with the existing one c. Add a  capacitor in...
A parallel plate capacitor with area A and separation d, has a dielectric inserted in half...
A parallel plate capacitor with area A and separation d, has a dielectric inserted in half of its volume. This capacitor is connected to a batter of voltage V and is fully charged. (second part is related to first so I had to post this as one question...I'm sorry) What is the capacitance of the capacitor? Force needed to start to pull out the dielectric? How much energy is stored in this dielectric? If we did manage to pull out...
1.) A parallel-plate capacitor is constructed from two circular plates with diameter 5.0 cm separated by...
1.) A parallel-plate capacitor is constructed from two circular plates with diameter 5.0 cm separated by 0.20 mm. What charge will collect on the plates if the capacitor is connected to a potential difference of 35.0 V? 2.)The capacitor from the previous problem is now disconnected from the voltage source. The separation between the capacitor plates is quadrupled and an insulator is inserted between the plates. The voltage between the plates is measured to be 68.3 V. Find the dielectric...
Chapter 18, Problem 1 A 47- resistor and a 29- resistor are connected in series across...
Chapter 18, Problem 1 A 47- resistor and a 29- resistor are connected in series across a 24-V battery. What is the voltage across (a) the 47- resistor and (b) the 29- resistor? Chapter 18, Problem 2 The current in a 63- resistor is 0.077 A. This resistor is in series with a 42- resistor, and the series combination is connected across a battery. What is the battery voltage? Chapter 18, Problem 3 What resistance must be placed in parallel...