- #1
WayneTie
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Hi, I don't get how to do this at all because I missed the lesson so could someone please help me? I appreciate it a lot!
First problem:
http://img55.imageshack.us/img55/9403/physics8tl.jpg
a) if the switch closes, what is i1? i1 is current at that position
b) graph v2 versus t graph
c) after a long time, if the switch opens, what is i2?
d) calculate Q (charge) of the capacitor
e) calculate U (potential energy) of the capacitor
Second problem:
There is a capacitor with two plates with very large surface area. They are set d distance apart and have equal but opposite charge densities.
a) diagram the current through the plates (no idea how to do this).
b) If a dielectric is added, does the electric potential increase, decrease, or stay the same? What mechanism causes this effect? (I think it goes down because of the q=cv formula but i don't know what mechanism).
Thanks a lot!
First problem:
http://img55.imageshack.us/img55/9403/physics8tl.jpg
a) if the switch closes, what is i1? i1 is current at that position
b) graph v2 versus t graph
c) after a long time, if the switch opens, what is i2?
d) calculate Q (charge) of the capacitor
e) calculate U (potential energy) of the capacitor
Second problem:
There is a capacitor with two plates with very large surface area. They are set d distance apart and have equal but opposite charge densities.
a) diagram the current through the plates (no idea how to do this).
b) If a dielectric is added, does the electric potential increase, decrease, or stay the same? What mechanism causes this effect? (I think it goes down because of the q=cv formula but i don't know what mechanism).
Thanks a lot!
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