Transcript Circuits - Physics-project-12-06

Ghaith shaheen
ID:1021080122
Mohammed Yousef Mahmoud
ID:1021080079
12-06
Simple Circuits
To start off, Simple circuits:- is a closed loop of conducter through which
charges can flow.
I.E:
Connected to load
(Light Bulb)
Energy Source (Battery)
The connections must be made in
such a way as to allow the energy to
flow from the source, through the
load and back into the source to
form a loop.
Types of Circuits
• There are two types of circuits:- Series and Parallel Circuits.
• Series Circuits:- Connected in a row with no “Branches”.
• Parallel Circuits:- Connected to make “braches” in the
circuit.
Series Circuit
These bulbs are connected in series. The Current is
the same all the way round. Also, increases voltage
as more light bulbs come in.
Definitions
• Current: Current in a series circuit is equal to the potential difference of
the source divided by the equivalent resistance.
• Resistance: of an object is a measure of its opposition to the passage of
an electric current.
• Equivalent Resistance of Resistors in series: The equivalent resistance
of resistors in series equals the sum of the individual resistances of the
resistors.
• Voltage: The voltage between two ends of a path is the total energy
required to move a small electric charge along that path.
Real life application of the type of
circuit
Parallel Circuits:- A real life application of parallel Circuit is
Christmas lights, because they are connected in Parallel so
that the strings remains lit even if the light bulbs are
Burned.
Series Circuit:- A real life application of Series Circuit is
batteries in flashlight, because they are connected in series
to increase voltage.
Problem:
• A 120.0-Ω resistor, a 60.0-Ω resistor, and a 40.0-Ω resistor
are connected in parallel and placed across a 12.0-V battery.
• a. What is the equivalent resistance of the parallel circuit?
b. What is the current through the entire circuit?
c.
What is the current through each branch of the circuit?
Answer:
• A) Req= 1/120 + 1/60 + 1/40= 1/20
B) It= Vt/Req = 120/20 = o.6 Α
C) I1= V1/R1= 12/120 = 0.1 A
I2= V2/R2= 12/60 = 0.2 A
I3= V3/R3= 12/40 = 0.3 A
Req= 1/0.5 = 1/20
Two Advantages of the selected
Circuits
Series Circuit:- An advantage of a series circuit is you can
add more power devices e.g batteries and they are easy
to use.
Parallel Circuit:- Some advantages of a parallel circuits
are; all the voltage from the power supply goes to all
components, bulbs are brighter and you can turn one
bulb off while leaving the other on.
Two disadvantages of the selected
circuit
Series Circuit:- Disadvantages are if one component is
broken or fails the others will nhot work; the cirfcuit is
broken also the bulbs will be dimmer because the
voltage is split.
Parallel Circuits:- Disadvantages are; the circuits are3
harder to use and they use a lot of power