In order for current to flow in a circuit, you must have which of the following? two light bulbs in parallel because more than 1 light bulb is always required
O a source of potential difference
O at least one resistor
a switch that is open because a current cannot flow without an open switch

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)