Equivalent resistance for resistors in parallel for 2 resistors:
Equivalent resistance for resistors in series:
Kirchoff's junction rule:
Kirchoff's loop rule:
where V = iR
R2 and R4 are in series.
R24 = 7.5 + 10 = 17.5 Ω
R24 and R3 are in parallel.
R234 = (17.5)(7.7)/(17.5 + 7.7) = 5.35 Ω
R1 and R234 are in series.
Req = R1234 = 13 + 5.35 = 18.35Ω
Current, i = 18/18.35 = 0.981 A
Consider the circuit shown below. Suppose four resistors in this circuit have the values of R1 = 13 Ω, R2 = 7.5 Ω, R3 = 7.7 Ω and R4 = 10 Ω, and that the emf of the battery is 18 V
Find the current through each resistor using Kirchoff's rules
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