Define power and how to you measure and calculate it in single phase and 3 phase, line and phase voltage, star and delta configuration

Question

Accepted Answer

Power is the rate at which work is done or energy is transferred in an electrical system.

Power is measured in watts (W) and calculated using the formula P = V x I, where P is power, V is voltage, and I is current.
In single phase systems, power can be calculated using P = V x I, where V is the line voltage and I is the current.
In 3 phase systems, power can be calculated using P = √3 x V x I, where V is the line voltage and I is the current.
In star configuration, the line voltage is equal to the phase voltage, while in delta configuration, the line voltage is √3 times the phase voltage.

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