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Hi

I can't get my head round Kirchoffs law. I've been alright with series and parallel circuits with one voltage supply, but I've been given a problem with two voltage supplies.

Would anyone be able to explain how I would get volt drop, current and power dissipated across these resistors please?

I also don't understand why in some cases you add the emf's and sometimes you take them away from each other

Ive been given this as an explanation to Kirchoffs Voltage law but it's just gobbledegook to me :/

Many thanks if you can help :)

Uploaded with ImageShack.us

Hi

I can't get my head round Kirchoffs law. I've been alright with series and parallel circuits with one voltage supply, but I've been given a problem with two voltage supplies.

Would anyone be able to explain how I would get volt drop, current and power dissipated across these resistors please?

I also don't understand why in some cases you add the emf's and sometimes you take them away from each other

Ive been given this as an explanation to Kirchoffs Voltage law but it's just gobbledegook to me :/

*"In any closed loop in a network, the algebraic sum of the voltage drops (i.e. products of current and resistance) taken around the loop is equal to the resultant emf acting in that loop"*Many thanks if you can help :)

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