A Christmas light is made to flash via the discharge of a capacitor. The effective duration of the flash is 0.23 as (which you can assume is the time constant of the capacitor), during which it produces an average of 45 mW from an average voltage of 2.85 V.
Randomized Variables
t = 0.27 s
P = 55 mW
V = 3.25 V
a. How much energy, in joules, does it dissipate?
b. How much charge, coulombs, moves through the light?
c. Find the capacitance of the light, in farads.
d. What is the resistance, in ohms, of the light?

We will use a video to study faraday’s law of electromagnetic induction by analyzing the induction that occurs due a coil of copper wire sliding along an air track that passes through an external magnetic field. specifically, we will: examine some of the main principles behind faraday’s law. apply lenz’s law to determine the direction of the induced emf. take measurements of the induced emf from the voltmeter as the coil passes into and out of the external magnetic field. use the horizontal scale provided to determine the speed of the coil. calculate the magnetic field induced in the coil as it passes into and out of the external magnetic field.