Which components are included in Electrical Bus 1?

Electrical Bus 1 in the Cessna 172 serves as a critical component of the aircraft's electrical system, distributing power to various essential instruments and systems. The correct components included in Electrical Bus 1 are typically the fuel pump and landing light.

The fuel pump is vital for providing sufficient fuel flow to the engine, and its operation is crucial for the aircraft's performance. The landing light, on the other hand, enhances visibility during takeoff and landing operations, thereby ensuring safety during crucial phases of flight. Both of these components are fundamental to the safe operation of the aircraft, which is why they are connected to Bus 1, providing redundancy and reliability in the electrical system.

The other options include components that are either on different electrical buses or are secondary systems that do not draw power from Electrical Bus 1. Therefore, they are not relevant in this context. Understanding the distribution of power in these buses helps in troubleshooting and ensures that you can maintain essential systems correctly during flight operations.