By condition, R1 = R2 = R3 = R4, let their value be equal to X Ohm.
Since all conductors are connected in parallel, their equivalent resistance is calculated by the formula: 1 / R = 1 / R1 + 1 / R2 + 1 / R3 + 1 / R4 = 1 / X + 1 / X + 1 / X + 1 / X = 4 / X = 1/20.
X = 4 * 20 = 80 ohms.
R1 = R2 = R3 = R4 = 80 ohms.
Answer: The resistance of each conductor is 80 ohms.
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