## How do you calculate AC voltage across a resistor?

Let the supply voltage be V (t) = VMax sin ωt connected to a resistor R. Let the instantaneous voltage across the resistor be VR. Let IR be the instantaneous current which is flowing through the resistor. As the above circuit is pure resistive in nature, the principles of Ohm’s can be applied.

## How do you calculate the power consumption of a resistor?

First, we use Ohm’s law ( V = I × R ), to find the current through the resistor. The voltage across the resistor is V = 9 V. The resistance of the resistor is R = 100?. Then, we can use the power rule ( P = I × V ), to find the power dissipated by the resistor.

**How do you calculate the wattage of an AC circuit?**

In a single-phase AC circuit like the one in our homes, the relationship between wattage, voltage, and current is known as Watt’s Law, and is stated as : Watt’s Law: W = V x A x p.f. wattage equals voltage times current times power factor.

### Can we use resistor in AC voltage?

The current flowing through the resistor is directly proportional to the voltage across it with this linear relationship in an AC circuit being called Impedance. As with DC circuits, Ohm’s Law can be used when working with resistors in AC circuits to calculate the resistors voltages, currents and power.

### What is AC voltage applied to a resistor?

Resistance is the opposition to the flow of current. AC is a current that changes its polarity. Hence, as we shall see a Resistor does offer resistance to AC. Here we will quantify this resistance and try to connect its value to the value of the resistance in a DC circuit.

**How does a resistor affect an AC circuit?**

Explanation: Value of opposition is the same for a resistor in case of both AC and DC. It, similar to a circuit carrying direct current opposes an alternating current. It dissipates power as well.

## Do resistors consume power?

The resistor “consumes” power (not current) and that power is the product of voltage across the resistor times the current flowing. The current flow is determined from the equation I = V/R.

## What is the average power dissipated by the resistor?

Vrms=1√2V0. We may then write for the average power dissipated by a resistor, Pave =12I0V0=IrmsVrms=I2rmsR.

**How do I calculate wattage?**

In other words, watt=amp X volt. Sometimes you will see this formula written as W=A X V. For example, if the current is 3 amps (3A) and the voltage is 110V, you multiply 3 by 110, to get 330W (watts). The formula is P=3A X 110V = 330 W (with P standing for power).

### How many watts does a AC use?

Central Air Conditioners: Cooling Function Central air conditioners use 1,000 watts per one ton of cooling capacity. For a 2,000 square foot home with standard-height ceilings, you’ll need about 3.5 tons of cooling power. This capacity of air conditioner will use about 3,500 watts per hour.

### What happens when AC voltage is applied to a resistor?

AC Voltage Applied to a Resistor Derivation As it works equally well for AC voltages and DC voltages. We saw that the voltage across the resistor and the current passing through it are both sinusoidal quantities and are represented by the graph shown in the figure above.

**Are AC and DC resistors the same?**

Answer: The resistance offered by a conductor for both AC and DC is different, the resistance offered 2 DC by conductor is known as DC resistance while the resistance offered to AC is known as AC resistance or effective resistance. For a given conductor AC resistance is more than its DC resistance.

## How do you calculate the total resistance of a resistor?

Resistor in series: The total resistance of resistors in parallel is simply the sum of the resistances of each resistor. Refer to the equation below for clarification: R total = R 1 + R 2 + R 3… + R n. Resistance of a conductor:

## How do I calculate the power consumption of my AC?

To calculate the power consumption of your AC just input the rated power of your AC, operation hours of your AC and the electricity tariff in your place. A a rule of thumb, to calculate energy consumption consider 1 ton of AC is equal to 1000 watts.

**What is the value of a resistor?**

Standard Resistor Value Calculator: 1%, 5%, 10% EIA Number Tolerance E12 10% E24 5% E96 1%

### What does the resistor color code on the calculator mean?

Only resistors are addressed by this calculator. The color coding for resistors is an international standard that is defined in IEC 60062. The resistor color code shown in the table below involves various colors that represent significant figures, multiplier, tolerance, reliability, and temperature coefficient.