Equivalent resistance for resistors in parallel:
Equivalent resistance for resistors in series:
R2, R3 and R4 are in parallel:
R234 = (1/R2 + 1/R3 + 1/R4)-1 = (1/2 + 1/2 + 1/4) = 0.8Ω
R1 and R234 are in series:
The battery in the figure below has negligible internal resistance.
Find the current in each resistor.
1)A (3 Ω resistor)
2)A (4 Ω resistor)
3)A (vertical 2 Ω resistor)
4) A (diagonal 2 Ω resistor)
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