# Help me: transients and current ratio calculations

Discussion in 'Homework Help' started by onlyvinod56, Jan 4, 2016.

1. ### onlyvinod56 Thread Starter Active Member

Oct 14, 2008
362
1
Hello,
I was given two circuits to solve:
1. Calculation of i(t) in a circuit with two capacitors.
2. Calculation of current ratio = I2(t) / I1(t)

I tried solving the first one but failed and for the second one ...... I know how to calculate v2(t)/v1(t)...but not the current ratio.

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2. ### WBahn Moderator

Mar 31, 2012
18,085
4,917
Well, there's no way that we can figure out why you failed on the first one until you show how you went about trying to solve it.

As for the ratio of the two currents -- I don't see that there is a definable relationships. Put a source on the left side and leave the right side unconnected and the ratio is zero. But a source on the right side and leave the left side unconnected and the ratio is infinite.

onlyvinod56 and anhnha like this.
3. ### onlyvinod56 Thread Starter Active Member

Oct 14, 2008
362
1
Thanks WBahn.....I too thought the same thing. Unless it is loaded, it cannot be calculated...right!!