Depends on the appliance, and in most cases, it does not matter. For a purely resistive appliance, such as a kettle, or a toaster, the two should be the same. Certain devices such as computers and other electronics will consume reactive power, which is measured by the VA rating. The Watt rating measures only real power. In residential settings, you will not be billed for reactive power, and so you do not need to worry about the VA rating. However, the VA rating is the "true" power required by the device, so if you are planning to hook it up to a generator or UPS, you will need to be able to provide at least that much power.
what is the power rating of energy
possibly an efficiency rate on a scale that isn't presented on the appliance
permanent attachment to an appliance An appliance plug may have a differently shaped plug, in order to prevent it from being plugged into an ordinary electrical outlet (one with the wrong voltage or power rating).
Normally the power rating of an electrical appliance can be found on its 'Rating Plate' or, if there isn't one, use the following formula W = A x V, where W = watts, A = current and V = voltage.
A fuse is given a various rating (strength). For instance, a home appliance (washing machine, etc) would usually have a fuse with a 13 amp rating. While a low powered lamp would only merit a 2 or 5 amp fuse rating. It is important to use a fuse of the correct rating in amps for each electrical appliance.
what is the power rating of energy
The appliance will not work because the fuse will blow every time.
it as d current rating or d current used by d appliance at max. power in its unit which is ampere(A).
16A
The fuse rating should be 5 amps
It depends on the efficiency rating of the burn appliance.
How much energy it uses