Recent content by Princess19

I think the answer is true, since the sign is positive, it doesn't oppose the change in magnetic flux, therefore violating the law of conservation of energy, and itll never stop moving as it increases in velocity.

no, its a test question and i want to see if i got it right :)

If a positive sign were present in Faraday's law instead of a negative sign, this would lead to perpetual motion.. True or false?

If a positive sign were present in Faraday's law instead of a negative sign, this would lead to perpetual motion.. True or false?

would equation 3 be i3R3 - i2R2 + V2 = 0 or -i3R3 - i2R2 + V2 = 0 okay, how about this for the outer loop V1 - I2R2 - I1R1 = 0

is the first equation a loop equation? i have no idea about the third loop equation. can you give me some sort of hint to get started on?

oops! would this be equation 3? i3R3 - i2R2 + V2 = 0

Homework Statement http://img251.imageshack.us/img251/3123/photo2152.jpg Homework Equations i don't know of any.. The Attempt at a Solution Ok, so the professor told us to develop three equations, but to only use two of those to try and solve for the currents, i1, i2, i3...

Thanks for your help! :)

R67 = 10 + 20 = 30 ohms 1/R567 = 1/10 + 1/30 = 7.5 ohms R4567 = 10 + 7.5 = 17.5 ohms R34567= 5 + 17.5 = 22.5 ohms 1/R234567 = 1/5 + 1/22.5 = 4 ohms R1234567 = 5 + 4 = 7 ohms how about now?

oh, 7.5 ohms is already the reciprocal of the answer i got which was .1333 oh, why is it in series? arent they facing each other?

Homework Statement http://img59.imageshack.us/img59/9321/photo2100.jpg R1 = R2 = R3 = 5 ohms R4 = R5 = R6 = 10 ohms R7 = 20 ohms Homework Equations 1/Rp = 1/R1 + ... +1/Rn (parallel) Rs = R1 +...+Rn (series) The Attempt at a Solution Here's what I've got so far. I need...

hmm weird that wasnt one of the choices on the test, just 1/2 and that's what i marked. wonder if its a typo on the test... oh well thanks a bunch!

-1/2?

1/2? or is it 2?