🔍 Key Concepts

• Power, current, and voltage relationship: ( P = V \times I ) and how to solve for current when power and voltage are known • Ampere-hours (Ah) and how they relate to current and time: ( ,\text{Ah} = I \times t ,) • Adding the total power of multiple devices to find the combined load on the battery

💭 Think About

• How can you find the total power used by the transmitter and receiver together before doing anything else? • Once you know the total power and the battery voltage, how can you calculate the total current draw from the battery? Which formula links power, voltage, and current? • After finding the current draw, how does the battery’s ampere-hour rating tell you how long it can supply that current?

✅ Before You Answer

• Be sure you add the two power values (325 W and 50 W) to find the total power first • Use the correct formula: ( I = \frac{P}{V} ) with total power and battery voltage to get current in amperes • Check that you use the battery rating 55 ampere-hours with ( t = \frac{\text{Ah}}{I} ) to find time in hours, not minutes or seconds