Answer: Option a) 18Ω
Explanation:
Given that,
R1 = 4.0Ω
R2 = 6.0Ω
R3 = 8.0Ω
Since the three resistors are connected in series, the equivalent resistance (Rtotal) of the circuit is the sum of each resistance.
i.e Rtotal = R1 + R2 + R3
Rtotal = 4.0Ω + 6.0Ω + 8.0Ω
Rtotal = 18Ω
Thus, the equivalent resistance is 18Ω