A 5-ohm and a 20-ohm resistor are connected in parallel. What is the total resistance of these two resistors?
a. 100 ohms
b. 25 ohms
c. 4 ohms
d. 2 ohms
c. 4 ohms
(R1 x R2) ÷ (R1 + R2) =
(5 x 20) ÷ (5 + 20) =
100 ÷ 25 = 4?
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