2) Find the equivalent resistance of the circuit below using Krichhoff's laws and addition of resistors...

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Answer 1

Answer #1

Using Kirchhoff's law

We know that, current enerring and leaving should be equal, so for the given circuit we can write:

I = I1 + I2

from Ohm's law

V = IR => I = V/R

V/Req = V1/R1 + V2/R2

But when devices are connected in parallel they have the same potential difference across them,

V = V1 = V2

1/Req = 1/R1 + 1/R2

Hence, 1/Req = 1/R1 + 1/R2

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Answer 2

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