Two resistors R1 = 36 Ω ± 5% and R2 = 75 Ω ± 5% are connected in series. The total resistance is

• 111 ± 0 Ω
• 111 ± 2.778 Ω
• 111 ± 5.55 Ω
• 111 ± 7.23 Ω

Correct Answer: 111 ± 5.55 Ω

Explanation:

Total maximum error ± (1.8 + 3.75) = ± 5.55 Ω.