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## Does VAB mean VA-VB?

Vab is scalar and unlike the convention followed for vectors, where R12= R2 -R1, we do Vab = Va -Vb, where b is the initial point and a is the final point. If we take initial point as the point where potential becomes zero i.e at infinity, we get absolute potential. So that way Vab will always be Va-Vb.

## How do you find VA in a circuit?

VA = VRMS x IRMS (4) You can calculate the apparent power in volt-amperes for ac circuits by multiplying the measured RMS voltage times the measured RMS current. A standard multimeter usually can make both of these RMS measurements.

## How do you solve apparent powers?

1. The difference between VA and Watts.
2. Definitions.
3. Apparent power, which is the product of rms (root mean square) volts.
4. Real power, which is the time average of the instantaneous product of.
5. Reactive power, which is the time average of the instantaneous product.
6. P = V x A = VA.
7. P = 120 V x 6 A = 720 Watts.

## What is true and apparent power?

True power is symbolized by the letter P and is measured in the unit of Watts (W). Reactive power is symbolized by the letter Q and is measured in the unit of Volt-Amps-Reactive (VAR). Total power in an AC circuit, both dissipated and absorbed/returned is referred to as apparent power.

## Why do we use apparent power?

Apparent power is the product of the RMS values of voltage and current. Apparent power is taken into account when designing and operating power systems, because although the current associated with reactive power does no work at the load, it still must be supplied by the power source.

newtons

## What is true weight and apparent weight?

True weight actually the product of mass and gravitational acceleration which is equal to mg where the apparent weight is the sum of net forces ( when you standing in elevator and elevator is moving either upwards or downwards, either high speed or low speed then you feel your weight heavier or lighter this is the …

## What is difference between real and apparent weight?

Your true weight is caused by gravityâ€”it is the force exerted on you by gravity; usually the earth’s gravity. Your apparent weight is the sum of your true weight and a fictitious force associated with your acceleration.

## What force is the same as your actual weight?

“The weight W of a body is equal to the magnitude Fg of the gravitational force on the body.” The gravitational acceleration varies from place to place.

## Do scales use normal force?

A scale measures the force that the scale is exerting on the object; typically this is a normal force, i.e. one that is normal, or perpendicular, to the surface or the scale. Now, very often, this normal force is equal to the weight, because the object is in equilibrium.