How many types of electrical laws are there?
First Law (Point or Current Law): The sum of the currents entering a junction is equal to the sum of the currents leaving the junction. Second law (Mesh or Voltage Law): It states that the algebraic sum of the potential drops in a closed network (mesh) is zero.
How many laws are there in electrical engineering?
Common Terms used in Circuit Theory
What is the basic law of electricity?
The most fundamental law in electricity is Ohm’s law or V=IR. The V is for voltage, which means the potential difference between two charges. In other words, it is a measurement of the work required to move a unit charge between two points.
What are the names of the two types of electrical theory?
There are two types of current, direct current (DC) and alternating current (AC).
What are the 3 laws of electricity?
Things that have equal numbers of electrons and protons are neutral. Things that have more electrons than protons are negatively charged, while things with fewer electrons than protons are positively charged. Things with the same charge repel each other. Things that have different charges attract each other.
What is Watt’s law?
Watt’s law defines the relationship between power, voltage and current and states that the power in a circuit is a product of the voltage and the current. … You can use Watt’s law to find or calculate the voltage, power, ampere, and resistance.
What are the two rules of electricity?
Rule 1 – Electricity will always want to flow from a higher voltage to a lower voltage. Rule 2 – Electricity always has work that needs to be done. Rule 3 – Electricity always needs a path to travel.
What is IE rule?
The Indian Electricity Rules, 1956 was made under section 37 of the Indian Electricity Act, 1910 (now repealed after enactment of The Electricity Act, 2003, but these rules themselves has been allowed to be in force till rules under section 53 of new Act are made).
What is the electrical formula?
Ohm’s law equation (formula): V = I × R and the power law equation (formula): P = I × V. P = power, I or J = Latin: influare, international ampere, or intensity and R = resistance. V = voltage, electric potential difference Δ V or E = electromotive force (emf = voltage).
What is Kirchhoff’s 2nd law?
State Kirchhoff’s Second Law
The second law by Kirchhoff is alternatively known as Kirchhoff’s voltage law (KVL). According to KVL, the sum of potential difference across a closed circuit must be equal to zero. … Also, the sum of voltage drops across the closed-circuit should be zero.
What is the difference between electricity and current?
Electricity is the form of energy and produced by the flow of electrons whereas current is combination of flow of charge per unit time. Current is the quantity of the electrical energy. Electricity can refer to static electricity, stationary or moving charges.
What is difference between DC and AC?
Both AC and DC describe types of current flow in a circuit. In direct current (DC), the electric charge (current) only flows in one direction. Electric charge in alternating current (AC), on the other hand, changes direction periodically.