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#1 2010-04-12 01:23:01

psychist101
Guest

ampere-maxwell law

hello. i am looking at an example in my book again.

the example has 2 metal cylinders with a distance, d between them

the problem states that a voltage V(t) is applied between the plates

what do they mean by that?

i thought it was an oscillating voltage, since they have an sin(kt) term in the V(t) equation. is that different from the capacitor being charged at a constant rate by a steady current.

#2 2010-04-12 01:26:43

Devantè
Real Member
Registered: 2006-07-14
Posts: 6,400

Re: ampere-maxwell law

Recall that the charge (Q) in a cylindrical capacitor is;

Q(t) = C·V(t)

where C is the capacitance and V(t) is the applied voltage. Differentiating, we get the current I(t);

I(t) = C·dV(t)/dt

Hope this helps.

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#3 2010-04-12 01:30:22

psychist101
Guest

Re: ampere-maxwell law

thanks for quick reply .

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