The potential difference of 120 volts and 12 volts is 108 volts.
The potential difference has to be 12 Volts since the light bulb will use 12 Volts (or Joules per Coulomb!) of energy. Voltage has to be 0 when it reaches the negative electrode of the battery, so you know that the 12 Volts have to have been consumed by the bulb!
The voltage of 120 volts is more common that the lower voltage of 12 volts.
"Power (/Watts) = Current (/amps) * Potential Difference (/volts)" Therefore, power = 7 * 12 = 84 W
Ohms are used to measure resistance, and volts are used to measure potential difference -two completely-different quantities. You might as well be asking, "How many kilometres are there in 12 degrees Celsius?"
6 amps.
160 amps at 12v.
160 amps at 12v.
12 Volts DC
Given R=? I=12 ampere V=120 Volts equation I=V divided R Solution; R=12 ampere 120 Volts answer (10)
To wire 10 12-volt batteries to achieve 120 volts, you need to connect them in a series configuration. Specifically, connect 10 batteries in series to produce a total of 120 volts (12 volts x 10 = 120 volts). Ensure that the positive terminal of one battery connects to the negative terminal of the next battery in the series. Finally, the output can be taken from the first battery's positive terminal and the last battery's negative terminal.
An automobile cigarette lighter uses 12 Volts DC. A typical 120 Volt circuit would destroy the 12 volt lighter.
Potential is measured in volts. The potential at any point is always measured with respect to another point, such as (but not necessarily) earth. So, if the potential at point A measures, say, +12 V with respect to earth, and the potential at point B measures, say, -12 V with respect to earth, then the potential difference between points A and B is +12 V - (-12 V), or 24 volts.