Three phase

1. Ohms Law
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2. 1
Introduction to Ohm's Law
Ohm's Law is a fundamental principle in
electrical engineering.
It relates voltage, current, and resistance in
an electrical circuit.
Ohm's Law provides a mathematical
formula to calculate these values.

3. 2
Understanding Voltage
Voltage is the electrical potential difference
between two points in a circuit.
It is measured in volts (V) and represents
the force that pushes electrons through a
circuit.
Voltage can be calculated using Ohm's
Law: V = I

4. 3
Exploring Current
Current is the flow of electric charge
through a conductor.
It is measured in amperes (A) and
represents the quantity of electrons
passing through a point in a circuit per unit
of time.
Current can be calculated using Ohm's
Law: I = V / R, where I is current, V is
voltage, and R is resistance.

5. 4
Defining Resistance
Resistance is the opposition to the flow of
electric current in a circuit.
It is measured in ohms (Ω) and depends on
the material, length, and cross-sectional
area of the conductor.
Resistance can be calculated using Ohm's
Law: R = V / I, where R is resistance, V is
voltage, and I is current.

6. 5
Visualizing Ohm's Law
Ohm's Law can be represented using a
triangle diagram.
The triangle shows the relationship
between voltage (V), current (I), and
resistance (R).
By covering the desired value, the formula
for calculating the remaining two values
can be determined.

7. 6
Applying Ohm's Law in Series Circuits
In a series circuit, the total resistance is the
sum of individual resistances.
The current flowing through each
component is the same in a series circuit.
Ohm's Law can be used to calculate
voltage drops across each component in a
series circuit.

8. 7
Applying Ohm's Law in Parallel Circuits
In a parallel circuit, the total current is the
sum of individual currents.
The voltage across each component is the
same in a parallel circuit.
Ohm's Law can be used to calculate the
individual currents and total resistance in a
parallel circuit.

9. 8
Limitations of Ohm's Law
Ohm's Law assumes that the resistance
remains constant.
It does not account for non-linear devices,
such as diodes or transistors.
Ohm's Law is most accurate for metallic
conductors under normal operating
conditions.

10. 9
Practical Applications of Ohm's Law
Ohm's Law is essential for designing and
analyzing electrical circuits.
It is used in various fields, including
electrical engineering, electronics, and
telecommunications.
Understanding Ohm's Law enables
troubleshooting and predicting the behavior
of circuits.

11. 10
Conclusion
Ohm's Law is a fundamental principle in
electrical engineering.
It provides a mathematical relationship
between voltage, current, and resistance.
By understanding Ohm's Law, engineers
and technicians can effectively design,
analyze, and troubleshoot electrical circuits.