FAA Powerplant Written Practice Test

What should be the design of bonding jumpers in relation to electrical resistance?

1. Provide high electrical resistance

2. Provide low electrical resistance

3. Eliminate electrical resistance

4. Maximize electrical resistance

The correct answer is: Provide low electrical resistance

The design of bonding jumpers should provide low electrical resistance to ensure effective electrical continuity and grounding within the aircraft's electrical system. Low resistance in bonding jumpers is critical for facilitating the safe and efficient flow of electrical current, especially during fault conditions or static discharge scenarios. When bonding jumpers have low resistance, they minimize voltage drops across connections, which can prevent sparking and potential damage to sensitive components. Additionally, low-resistance connections help maintain proper operation of electrical systems and enhance overall system reliability by ensuring that all components are effectively grounded. High or maximized electrical resistance would impede current flow and could lead to unsafe conditions, such as arcing or equipment malfunction. While eliminating electrical resistance entirely is not feasible due to the inherent properties of materials, it is the goal to keep resistance as low as practical to ensure system safety and performance. This is why the focus is on achieving low electrical resistance in the design of bonding jumpers.