What is the difference between unit VA and Watt?

Question

What is the difference between unit VA and Watt?

Answer 1

dfinition-

    1 joule= the energy generated when 1 ampere of electrical current, passes through an electrical potential 1 volt drop,

  1 watt= 1 joule/second

so joules is the quantity of energy,watt is  tthe rate of generation of energy.

watt=energy/second.

volt ampere in ac ckt is reactive power and nothing .

loads such as induction motor do not act pure  resistors ,but like as inductor.

the watt rating is typically 65% of volt ampere rating.

Answer 2

In DC and purely resistive AC circuits there is no difference.  In AC circuits with inductive and/or capacitive loads VA is used for total power, VAR for "reactive" power, and Watt for "real" power, the power used to do work or provide heat.

Answer 3

VA = Volts x amps

Watts = Volts x Amps x cosine of phase angle between volts and Amps