Electricity and Magnetism
The Aston Martin One-77 has a battery of 12 Volts.
The Aston Martin One-77 has headlight bulbs of 12 Volts 6 Watts.
How much current is the ammeter measuring in the following circuit? Since the One-77 uses a parallel circuit, and a battery of 12 V to power its headlights, we must determine how much current is going through the circuit so that we can manufacture the vehicle with the appropriate materials.
Step 1: First, we have to determine the amount of current going through each bulb. We can do this since we have power in Watts and Voltage
Step 2: Since we now have the amount of current going through each bulb, we can determine the resistance of one bulb using the formula with Power and Current shown.
Step 3: Here, we made the original parallel circuit into a series circuit to better calculate total Resistance.
Step 4: Finally, using Ohm's Law, we can use the Voltage of the battery and our calculated total Resistance to determine the total Current, which is what the ammeter is measuring.
Therefore, with a current of 1 Ampere going through the circuit, a conducting wire of steel, copper or brass would be sufficient to conduct electricity to the Aston Martin One-77's headlights.