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Interactive
Engineering
Workshop
Eng. Mageda Al-Moubarak
Eng. Fadia El-ssa
Contents
• Electric Elements
• Instruments
Electric Elements
Active
Passive
Active Elements
• Active elements are capable of providing an
average power greater than zero to external
devices, over an infinite period of time.
 Examples
Current source:
produces a current in a
conductor
Voltage source: produces
a potential difference between
two points.
Passive Elements
• Passive element is an element of the electrical
circuit that Does Not create Power.
Resistors, Capacitors, Inductors and diodes
are examples of passive elements.
Voltage and Current
• Voltage: A measure of the work to move a
charge.
Voltage= Energy/ Charge.
• Current: Charge in motion
Current= Charge/ Time.
• Power = V*I= Energy * Charge = Energy
Charge
Time
Time
Resistor
• When a voltage V is applied across the
terminals of a resistor, a current I will
flow through the resistor.
• The current is directly proportional to
the voltage using ohm’s law I=1*V
R
Where the slope of the line = 1/R
Series
Parallel
Shorted Resistor
Potentiometer
Capacitor
– Capacitance C, measured in Farads - is an electronic
component consisting of a pair of conductors
separated by a dielectric (insulator).
– When there is a voltage across the conductors, a
static electric field develops, that stores finite
amount of energy.
– Impedance Zc= 1/jωc, Where ω = 2πf.
Series
Parallel
In the capacitor the Current leads the Voltage.
Inductor
• Inductance L, measured in Henries –Typically an
inductor is a conducting wire shaped as a coil.
• electric current passing through the inductor
creates a magnetic field and thus stores
energy.
• Impedance ZL= jωL , where ω = 2πf.
Series
Parallel
In the inductor the Voltage leads the Current.
CIVIL
Diode
• A diode is a two-terminal electronic component
that conducts electric current in only one
direction.
• The most common function of a diode is to allow an
electric current to pass in one direction while
blocking current in the opposite direction.
Light Emitting Diode (LED)
Bread Board
DMM
Power
Supply
Galvanometer
instruments
Function
Generator
Frequency
Counter
Signal
Generator
Oscilloscope
Power Supply
Digital Multi-Meter (DMM)
Function Generator
Cathode Ray Oscilloscope
A. A capacitor can be
used like a temporary
battery.
TRUE
B. In an Inductor The
Current leads the
Voltage.
False
C. Current is inversely
proportional to the
voltage.
False
D. The Impedance of
the Capacitor
depends on the
input’s frequency.
TRUE
E. A student advised His
friend to place the LED
as follows
False
1. Give 3 ways in which you can have an
Equivalent Resistance of 60 KΩ. Given the
following resistances,
105
Two 1.2 *
Ω
20 K Ω
12 K Ω
50 K Ω potentiometer.
47 K Ω
1KΩ
•Two 1.2 * 105 Ω in
parallel
•20 K Ω and 40 from
the 50 K Ω
potentiometer in
series.
•12 K Ω, 47 K Ω, and 1
K Ω in Series.
2.Design a circuit consisting of 2 resistors and
a power supply of 9 V, whose Current is
3mA.
3. Using the Following Color Code. What is the
value of this resistor?
82000Ω with ±5%
5. How can you discharge a capacitor?
Connecting it with a resistor
6. Find the Equivalent Inductance of the
following circuit.
Leq=8mH
A. LED stands for
Light
Emitting
Diode
……………………
B. Digital Multi-meter is
used to measure
Resistance
……………………………,
Voltage
…………………………,
Current
and ………………………
C. DC offset Knob is
found in an
instrument which is
Function
Generator
…………………………
E. To generate a Square
Wave. We Should use
a(n)
Function
Generator
……………………………….
Given a 10K Potentiometer, and
a fixed power supply of 5 V.
Draw a circuit to show how you
can get 3 V output.
5* R2 = 3V
10K
R2= 6KΩ
R1=10K-6K=4K Ω