Energy Stored by Capacitor Video Lessons

Video Thumbnail

Concept

Problem: A Christmas light is made to flash via the discharge of a capacitor. The effective duration of the flash is 0.23 s (which you can assume is the time constant of the capacitor), during which it produces an average 75 mW from an average voltage of 3.15 V.Part (a). How much energy, in joules, does it dissipate?Part (b). How much charge, coulombs, moves through the light?Part (c). Find the capacitance of the light, in farads.Part (d). What is the resistance, in ohms, of the light?

FREE Expert Solution

We have the following information:

Duration of the flash, t = 0.23s

Power, P = 75 mW

Voltage, V = 3.15V

91% (335 ratings)
View Complete Written Solution
Problem Details

A Christmas light is made to flash via the discharge of a capacitor. The effective duration of the flash is 0.23 s (which you can assume is the time constant of the capacitor), during which it produces an average 75 mW from an average voltage of 3.15 V.

Part (a). How much energy, in joules, does it dissipate?

Part (b). How much charge, coulombs, moves through the light?

Part (c). Find the capacitance of the light, in farads.

Part (d). What is the resistance, in ohms, of the light?

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Energy Stored by Capacitor concept. You can view video lessons to learn Energy Stored by Capacitor. Or if you need more Energy Stored by Capacitor practice, you can also practice Energy Stored by Capacitor practice problems.