Hard to understand the handwritten pictures, can you please write it out on the
ID: 1716835 • Letter: H
Question
Hard to understand the handwritten pictures, can you please write it out on the computer?
ECT 122 Week 3 iLab #1
Parts:
Breadboard
DC Power Supply
Hand Held DMM
Test leads
Wire
1.0k? resistor
2.2k? resistor
3.3k? resistor
1. Identify the type of the following circuits as either serial or parallel.
2. List four characteristics of a series circuit.
3. Calculate the total resistance in the circuit below. Show the formula used.
Calculated:
= __________ (Total resistance)
4. Download the Multisim file “Series1” from Doc Sharing, Week 3. Run the simulation and verify the simulated results are the same as the calculated values. Were the values the same? Yes/No. If No, why?
Simulated:
XMM1 = = __________ (Total resistance)
5. Construct the circuit above on the breadboard. Have the professor verify the circuit. Using the handheld DMM and ELVIS DMM (if you are using ELVIS), measure each resistor value and the total resistance. Record the values in the table below. Compare the measurements and verify that they are within acceptable range.
Component
Rated Value
Hand Held DMM Measured Resistance
ELVIS DMM Measured Resistance (if applicable)
R1
1kW
R2
3.3kW
R3
2.2 kW
RT
Table 1
Component
Rated Value
Hand Held DMM Measured Resistance
ELVIS DMM Measured Resistance (if applicable)
R1
1kW
R2
3.3kW
R3
2.2 kW
RT
Explanation / Answer
Question 1-(solution)-
A series circuit is a circuit in which resistors are arranged in a chain, so the current has only one path to take. The current is the same through each resistor. The total resistance of the circuit is found by simply adding up the resistance values of the individual resistors:
equivalent resistance of resistors in series : R = R1 + R2 + R3 + ...
A parallel circuit is a circuit in which the resistors are arranged with their heads connected together, and their tails connected together. The current in a parallel circuit breaks up, with some flowing along each parallel branch and re-combining when the branches meet again. The voltage across each resistor in parallel is the same.
The total resistance of a set of resistors in parallel is found by adding up the reciprocals of the resistance values, and then taking the reciprocal of the total:
equivalent resistance of resistors in parallel: 1 / R = 1 / R1 + 1 / R2 + 1 / R3 +...
therefore the circuit shown in figure(A) is a series connected circuit.
the circuit shown in figure (B) has the resistors with theirs heads connected together, and their tails connected together.hence circuit of figure (B) is parallel circuit.
SOLUTION TO QUESTION 2 -
Characteristics of series circuit-
a. The total resistance in the circuit is equal to the sum of the individual resistances.
RT = R1 + R2 + R3 + . . . + RN
b. The current is the same at all points in a series circuit.
c. The sum of the voltage drops across each resistor equals the sum of all the voltage sources.
d. Power supplied by the source is equal to the sum of the power dissipated in the resistors
e. Any break in the circuit will render the entire circuit inoperative.i.e the circuit becomes open circuited.
SOLUTION TO QUESTION 3-
The circuit is series connected.
equivalent resistance of resistors in series : R = R1 + R2 + R3
R =1kohm +3.3kohms + 2.2kohms
R=6.5kohms
therefore total calculated =6.5kohms
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