(adsbygoogle = window.adsbygoogle || []).push({}); 1. a31-cm-diametercoil consists of20 turnsof copper wire2.6mm in diameter. A uniform megnetic field perpendicular to the plane of the coil, changes at a rate of8.65 x 10 ^ -3 T/s

What is the current and what is the rate at which thermal energy is produced?

now I figured this would be similar to emf induced in a moving conductor, thus that would give me the emf in volts and I could calculate the current using V = IR, however that dos not seem to give me the correct answer.

I am currently trying to figure out which forumula(s) to use to get an answer to this question.... however nothing that I've tried so far seems to work.

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2. What voltage is needed to produce electron wavelength of.10nm? (assume electrons are nonrelativistic)

here I tried to use the following 2 forumulas:

wavelength = Planck's constant / (mass * velocity)

and

eV = .5 mv^2

now I used the 1st formula to to get v = ....

and inserted that into the 2nd formula to get

eV = .5m ((wavelength * m) / (Planck's constant))^2

now I convert from eV to Volts but.... answer is way off... where am I going wrong here?

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# Homework Help: An electrical and a quantum question

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