Hey guys , please help me with my homework..

Question

kainui · Answer

Micro is 10^-6 not 10^-12. Otherwise it looks like you're doing it correctly.

kainui · Answer

Actually, on the second one you have (10^12)(10-10)/10, but that would lead you to 0. Obviously this can't be right! When calculating the capacitance from the voltage and charge on the plates, be sure you just use the value of the charge on one plate. It makes sense that the charge on one plate is equal in magnitude and opposite in charge as the other because in a closed DC circuit you are literally moving electrons by taking them out of one plate and putting them into the other plate. You're not changing the number of electrons in the wire when you move them, so they have to be equal.

 It's like having twenty balls in your left hand and 20 balls in your right hand and then putting 10 of the balls from one hand into the other. Each hand has either 10 more balls or 10 less balls.

anonymous · Answer

Thanks kainui , I'm not sure about the second one , what should I put ? 

if I did this 
c=(10*10^-6/10)+(-10*10^-6/10) it's equal to zero anyways ,

should I put it on the other side then move it to be positive instead of negative ?

anonymous · Answer

@kc_kennylau  :(

kc_kennylau · Answer

Sorry I don't know how to do this... :/
Good luck with your love life :)

anonymous · Answer

@kc_kennylau  Thank you , :)