What is the formula for voltage in a parallel circuit?

In a parallel circuit, the key characteristic is that all components share the same voltage across their terminals. Therefore, the total voltage (Et) in a parallel circuit remains constant and is equal to the voltage across each individual component. This means that if you have multiple branches in the circuit, each branch experiences the same voltage as the total voltage of the source.

For example, if you have three resistors connected in parallel, each resistor will have the same voltage drop across it as the voltage supplied by the source. This property is crucial for understanding how parallel circuits operate, as it allows for components to function independently while maintaining equal voltage levels.

The other formulas provided relate to different electrical relationships. One option suggests summing voltages, which is applicable in series circuits, where the total voltage is the sum of the individual voltages. Another option refers to Ohm's law in terms of current and resistance, which does not apply directly to calculating voltage in parallel circuits. The last option represents a power formula that connects voltage, current, and power but does not explicitly define voltage in the context of a parallel circuit. Thus, the accurate representation of voltage in a parallel configuration is that the total voltage is equal to the voltage across each component, ensuring consistency throughout the