How is the high side coil current calculated?

To calculate the high side coil current in an electrical circuit, the most accurate method involves using the relationship between power, voltage, and current. The correct approach is to divide power by voltage. This is based on the fundamental electrical equation where power (measured in watts) can be expressed as the product of current (in amps) and voltage (in volts):

Power (P) = Voltage (V) × Current (I).

Rearranging this equation to solve for current gives us:

Current (I) = Power (P) / Voltage (V).

This relationship is particularly useful in high side calculations within power systems, where it is often necessary to determine how much current will flow based on the power being supplied and the voltage at which it operates.

Other options relate to different electrical calculations and do not correctly represent how to compute the coil current in this context. For instance, voltage divided by resistance calculates current based on Ohm's law, while power divided by resistance does not yield a relevant expression for coil current. Thus, understanding the relationship between power and voltage clarifies why dividing power by voltage is the correct method for determining high side coil current.