Hence, the analysis of power and energy are taking important part besides current and voltage in circuit analysis. As the power factor of the DC is 1 (one) it can not affect the power formula and we always say that the DC has no power factor. This condition can be seen in Figure.(1). Using Equation. If the power has a positive (+) sign, the power is being delivered to an element or the element is absorbing power. Dielectric Properties – Terminology, Mechanism, Applications.

In the DC circuit, there is no angle between voltage and current even if the circuit consists Inductors or capacitors because inductance and capacitance effect does not exist on DC supply. For illustration above we will conclude that : because absorbing power of -12W is the same with supplying power of +12W. We measure power in units of Watts.

The electric power utility measure their energy in watt-hours (Wh) where : For better understanding let us review some examples below : 1. I is the electric current

Also, register to “BYJU’S-The Learning App” for loads of interactive, engaging physics-related videos and an unlimited academic assist. This is the basic formula of electrical power.

Electrical Power Theory and Formula Explanation, Electrical energy is the most usable energy in the modern day. Figure. V is the potential difference in the circuit 3. And then read the linear circuit analysis. In fact, we still need to know how much power an electronic device can handle. We still need electric power. The power dissipated by the circuit element reactance is called Reactive Power. Before moving on make sure to read what is dc circuit first. .

Moreover, it is important to know that a Watt = Joule per second. (2) shows how to get a positive sign. DC has a constant value that means the magnitude and direction of current do not change with the time. This convention shows how the current enters through the positive polarity of voltage, makes p = +vi or p > 0 implies that the element is absorbing power. But remember that the value of the voltage and current should be. Your email address will not be published. Figure. The relation between Apparent power, active power, and reactive power can be written as below.

Stay tuned with BYJU’S for more such interesting articles. In fact, we still need to know how much power an electronic device can handle.

Resistors: P = electric power (W) V = voltage difference (V = J/C)

If the power has a positive (+) sign, the power is being delivered to an element or the element is absorbing power. CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, NCERT Solutions Class 11 Business Studies, NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions For Class 6 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions for Class 8 Social Science, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, Relation Between Electric Field And Electric Potential. It is denoted by '. The electric power in watts produced by an electric current I consisting of a charge of Q coulombs every t seconds passing through an electric potential (voltage) difference of V is

2 Electric Power Formula Examples.

Electric power is the rate at which work is done or energy is transformed into an electrical circuit. The Energy expended to do work in unit time is termed as Power. What causes an electric shock Current or voltage ? Actually, the electrical power depends upon three important things, The angle between the voltage and current exists when the circuit consists of an inductor or capacitor. Now let,s know AC power formula. If an electrical circuit consists the only resistor then naturally there will be no angle between the voltage and current but if the circuit consists. The RMS value of the voltage can be found from the equation. Although current and voltage are fundamental variables for electric circuits, they are not still sufficient to solve all the electrical phenomenon. Combining the Equation. Electric power, like mechanical power, is the rate of doing work, measured in watts, and represented by the letter P. The term wattage is used colloquially to mean "electric power in watts." Passive sign convention is achieved when the current enters through the positive terminal of an element and p = +vi, if the current enters the negative terminal, p = -vi. In opposite for p = –vi or vi < 0 in Figure. By Ohm's Law, V = IR, and so there are additional forms of the electric power formula for resistors. Simply put, it is a measure of how much energy is used in a span of time. Mosquito Killer Bat circuit and working principle, Electrical Engineering Interesting Questions and Answers, Electronics Engineering Interesting Questions and Answers. Based on the information given above try the application problem given below: A 9V battery is connected to a resistor having a resistance of 10 Ω. If we look at it from the Ohm’s Law, we see that V = IR here, thus there are other forms of the electric power formula for resistors. R is the resistance in the circuit. General form: electric power = voltage difference x current.

For a convenient method of this problem, we can review the relationship between current, voltage, and power. Required fields are marked *.

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