Question

28-2 Camera flash The camera flash is a capacitor that stores a charge of 0.073 C...

28-2

Camera flash The camera flash is a capacitor that stores a charge of 0.073 C at 330 V. The flash releases energy to a light bulb with a resistance 5 Ω. This is an RC circuit, so the power will decay. Find the:

a) capacitance of the flash in μF. Eq. (26.15)

b) initial power in kW used by the light bulb. Eq. (28.12)

c) decay time constant τ in ms. Eq. (28.30)

Science   Physics   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
The RC charging circuit in a camera flash unit has a voltage source 275 V and...
The RC charging circuit in a camera flash unit has a voltage source 275 V and a capacitance of 125 F. (a) Find its resistance R if the capacitor charges up to 90.0% of it's final value in 15.0 s. (b)Find the average current delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.00 ms
The RC charging circuit in a camera flash unit has a voltage source of 305 V...
The RC charging circuit in a camera flash unit has a voltage source of 305 V and a capacitance of 121 µF. (a)Find its resistance R (in ohms) if the capacitor charges to 90.0% of its final value in 12.2 s. (b)Find the average current (in A) delivered to the flash bulb if the capacitor discharges 90.0% of its full charge in 1.04 ms.
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...
9. A certain capacitor stores 33 J of energy when it holds 1,507 uC of charge....
9. A certain capacitor stores 33 J of energy when it holds 1,507 uC of charge. What is the capacitance in nF? 10. A R-C series circuit is connected to a 12 volt battery. Initially the capacitor has zero charge. Assume R= 46 Ω, C= 1,171 μF. When the circuit is closed, calculate the time (in Millisecond) when the capacitor voltage will be 63.21% of its final voltage. 10. A R-C series circuit is connected to a 12 volt battery....
Consider an RC circuit with a resistance of R = 200.0 Ω, a capacitance of C...
Consider an RC circuit with a resistance of R = 200.0 Ω, a capacitance of C = 1.000 μF, and attached to a battery of V = 120.0 V. (a) If the capacitor is initially uncharged, find how much charge is on it after 100.0 μs. (b) how long does it take to reach 50% of max charge? (HINT: Full charge is Q max = C V)
once we connect two charged plates the charge on them1 will decrease exponentially because the charges...
once we connect two charged plates the charge on them1 will decrease exponentially because the charges flow from one plate to the other due to the potential difference between the two plates. The final answer we arrived today for how much charge Q(t) is left on the plates after closing the switch at t = 0 was Q(t) = Q0e − t/RC , where Q0 is the initial charge on the capacitor plates, R is the resistance of the light...
1.) 2500 C of charge is passed over a 2 hour period across a certain capacitor...
1.) 2500 C of charge is passed over a 2 hour period across a certain capacitor (a device that stores electrical energy in an electric field). What is the resistance of this capacitor if the voltage across it is 200 mV. 2.) What is the power of a microchip that passes 1 C of charge with a potential difference of 0.001 mV in 1 second.
1) 2 point charges are separated by a distance of 8 cm. The left charge is...
1) 2 point charges are separated by a distance of 8 cm. The left charge is 48 mC and the right charge is -16mC. Using a full sheet of paper: draw the 2 charges separated by 8cm, centered in the sheet. (if you are missing a ruler estimate 8cm as ⅓ a paper sheet length). [6] a) Draw field lines to indicate the electric fields for this distribution. [4] b) Draw 3 equipotential surfaces, 1 each, that pass: -Through the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT