This document discusses Ohm's Law and the relationships between current, voltage, and resistance in electrical circuits. It defines each term, explains Ohm's Law formulae, and provides examples of calculating voltage, current, and resistance when two variables are given. The document includes practice problems applying Ohm's Law, as well as additional activities on series and parallel circuits.

1. •Activity 1:
“Battle of the Butt”

2. THE RELATIONSHIP BETWEEN
CURRENT, VOLTAGE, AND
RESISTANCE
OHM’S LAW

3. OBJECTIVES:
•Identify and differentiate current, resistance
and voltage,
•Determine what is Ohm’s Law,
•Solve problems related to Ohm’s Law

5. •Current
- is the rate of flow of electric charges
one point to another in a circuit.
- it is what flows on a wire or conductor
- it is measured in Amperes and it has
positive and negative terminal

6. •Voltage
– it is the difference in charge between two
points
- it is what makes the current move
Example: Battery

7. Resistance
– determines how much current will flow
through a component
- is a material’s tendency to resist the flow of
charge (current)
Example: Resistor

9. •Ohm’s Law
– in a simple circuit, voltage is directly
proportional to current,
where V=IR

10. CURRENT VOLTAGE RESISTANCE
- Amperes - Volts - Ohms
- I - V - Ω
- I =
𝑉
𝑅
- V = IR
- R =
𝑉
𝐼

11. •Example 1:
If a circuit has a resistance of 44 Ω and a
current of 5 A, what is its voltage?

12. Given: Solution:
Resistance(R) = 44 Ω V = IR
Current(I) = 5 A V = 44Ω x 5A
V = 220V
Required:
Voltage(V) = ?

13. Problem 2:
An electric fan has a resistance of 3 kΩ and a
voltage rating of 220 volts. What is the current needed
to operate the electric fan?

14. Given:
R = 3 k Ω
V = 220 V
Required:
I = ?
Solution:
Conversion of k Ω - Ω
3 k Ω x
1000 Ω
1 k Ω
= 3000 Ω
Solving for the required:
I =
𝑉
𝑅
I =
220 𝑉
3000 Ω
I = 0.07333333 or 0.073 A

15. • TRY THIS:
Problem 1.
What is the amount of current (I) in this circuit?

16. • Problem 2:
In the Province of Antique, Akelco is one of the
electric energy distributor here in Libertad which
each household 220 volts of voltage and 60 A of current.
By applying your knowledge on Ohm’s Law, solve for the
resistance.

17. •Generalization

18. Test I. 4 Pics 1 Word
Identify the words that is being described by the
picture.
1.
2.
3.

19. • Test II. Problem Solving
Suppose, an ambulance starter motor needs 40A
operate with a resistance of 0.150 ohms. What is the
needed voltage to start the motor in order to send the
covid – 19 patients to the hospital?

20. • Additional Activity
Explain the advantages and disadvantages of series and
parallel circuits.
• You can study the lesson through this link:
https://www.bing.com/videos/search?q=what+is+the+advantag
s+and+disadvantages+of+series+and+parallel+circuits&qpvt=what+i
+the+advantages+and+disadvantages+of+series+and+parallel+circu
s&view=detail&mid=FD9315D5FB8697E95EEFFD9315D5FB8697E95EE
&&FORM=VRDGAR

21. Thank you!