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AP102 General Physics II

Lab Report 5

Electrical Circuit and Its component 2

Debby Syefira 2014360005

Date Performed : 10th April 2015

Lecturers :

Ms. Lina Jaya Diguna, Ph.D

Mr. Fatih Satrio

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A. ABSTRACT

A few trial were done to watch the condition of shut and open circuit, current on circuits, the resistance estimation of resistors, and the relationship between voltage, current and resistance. We found that there is potential distinction on open circuit to permit current stream, watched that current is part up in parallel circuit, checked the resistance estimation of three resistors inside of resilience band of 5%, and confirmed Ohm's Law.

B. OBJECTIVES

Familiarize students with MR board and learn basic principle of electronics

To learn and measure the current, voltage ,resistor, capacitor in the Series and parallel

circuit

Identify the concept of current, voltage, resistor and capacitors.

Understanding the concept of current, voltage, resistor, capacitance.

To learn and measure the current, voltage ,resistor, capacitor in the LED

Learn how to use LDR(Light Dependent Resistor)

pg. 3

C. TOOLS AND APPARATUS

Tools and apparatus to support this experiment are:

D. No Tools and Equipment Quantity

1 Mr Board 1

2 Battery (2,4v) 1

3 Connector 5

4 LED 5

5 Digital multimeter 1

6 Capacitor 2

7 Resistor 5

8 Connecting cable between digital multimeter and MR Board 2

9 LDR (Light Dependent Resistor) 1

10 7 Segment 1

11 FND 1

pg. 4

E. PROCEDURES

4.4.1 Procedure

1. Create the source of the electricity(from battery,capacitor,switch) and connect to the MR

Board.

2. Put LED and the resistor on the circuit.

3. The component connects with the circuit in a way that provides a single path for

electrons to flow through

4. Measure the voltage in the circuit with digital multi-meter between

(Vab),(Vbc),(Vcd),(Vbc)

5. And convert the value in the digital multi-meter with the formula a/x = b/c

6. Measure the current in the circuit with digital multi-meter between (Iab),(Ibc)


4.4.2 procedure

1. Create the source of the electricity(from battery,capacitor,switch) and connect to the MR

Board.


3. First arrange the LED for the serie circuit.Than arrange component connects with the

circuit in a way that provides multiple pathways for electrons to flow through(Serie-

Parralel).

4. Measure the voltage in the circuit with digital multi-meter between

(Vaj),(Vab),(Vcd),(Vbc), (Vde),(Vef), (Vhg),(Vgh),(Vtotal)


pg. 5

6. Measure the current in the circuit with digital multi-meter between (Ide),(Ibc), (Idh)


8. Find the resistant total in the circuit(serie-parralel) with the digital multi-meter

4.3 Procedure

1. Create the source of the electricity(from battery, capacitor, switch) and connect to the

MR Board.

2. Put Capacitor on the circuit.

3. First arrange the capacitor for the serie circuit.And measure how many charge n the

capacitor after charged.Calculate with the formula q=cv

4. Then arrange the capacitor for the parralel circuit.And measure how many charge n the

capacitor after charged.Calculate with the formula q=cv

5. Measure the voltage in the circuit with digital multi-meter between (Vbc), (Vde) also find

the q in each capacitor for parallel

4.4 Procedure


MR Board.


3. The component connects with the circuit in a way that provides a single path for electrons

to flow through

4. Put the LDR on the MR Board to make series circuit

5. Give the light on the LDR for several time

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6. Then turn on the switch of the source

4.5 Procedure


MR Board.

2. Put seven segment and FND on the series arragement on the circuit

3. Then turn on the switch of the source

4. And try to make the number 1-9 with 7 segment

F. RESULT AND DISCUSSION

Result 1 Identify V, I and R in Seri Circuit

Picture above is the circuit that being observe. Calculation bellow is the result of the

observation

a. Vad = 10

10 4.8 = 4.8

b. Vab = Vled

Vab/Vled = 10

10 1.8 = 1.8

c. Vbc = VR

Vbc/VR = 10

10 2.2 = 2.2

d. Vcd = 10

10 0.4 = 0.4

Figure 1 Seri Circuit in MRBoard

pg. 7

e. Iab = 25

15 7.5 = 12.5

f. Ibc = 25

15 7.5 = 12.5

g. R = orange, orange, brown, gold

-%gold

pg. 8

Result 2. V, I , R in Seri-Parallel cuircuit

a. Vaj = 10

10 4.8 = 4.8

b. Vab = 0

c. Vbc = 2.5

10 2 = 0.5

d. Vcd = 10

10 1.6 = 1.6

e. Vde = 2.5

10 1.3 = 0.325

f. Vef = 10

10 1.5 = 1.5

g. Vdh = 2.5

10 1.3 = 0.325

h. Vhg = 10

10 1.6 = 1.6

i. Vgi = 0.5

10 1.7 = 0.085

j. Vij = 0 Volt

k. Vaj = or not = Vac + Vcd +Vdg

10

10 4.8 = =

2.5

10 1.5 +

10

10 1.6 +

10

10 2.4

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4.8 = or not = 0.375 + 1.6 + 2.4

4.8 not = 4.375

l. Ibc = 2.5

15 5 = 0.833

m. Ide = 2.5

15 2.5 = 0.417

n. Idh = 2.5

15 2.5 = 0.417

o. R total =

=

4.8

0.833= 5.76 V/mA

Discussion 2

Result 3. Capassitor in Seri and parallel circuit

How many charge in capasitor that

consist on circuit beside?

V = 10

10 4.4 = 4.4

V = 4.4 V

q = CV

q = 47 F 4.4 V = 2.068 10-4 FV

b. Charge in capasitor in seri circuit with 2 capasitor

How many charge in these

capasitors?

Vab = 10

10 2.2 = 2.2

Vab = 2.2V

pg. 10

Vac = 10

10 2.2 = 2.2

Vac = 2.2V

qab= CV

qab = 47 F 2.2 V = 1.034 10-4 FV

qac= CV

qac = 47 F 2.2 V = 1.034 10-4 FV

c. Charge in capasitor on the parallel circuit

How many charge on these capasitors?

Vbc = 10

10 4.4 = 4.4

Vdc = 10

10 4.4 = 4.4

qab= CV

qab = 47 F 4.4 V = 2.068 10-4

qac= CV

qac = 47 F 4.4 V = 2.068 10-4

Result 4. Light Dependent

Resistor

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Led is turn off when there is no light put on the LDR.

However, when light gave to the LDR (by phone flash) the led will turn on.

Discussion

The diagram of Resistor Vs Light for LDR depict on the picture bellow

The resistor of LDR rely on upon the light. At the point when the circuit has less light the

resostor of turn out to be high and the drove does not sparkling. On the other hand, when

LDR beam with the glimmer in max ammount. The drove is sparkling. It is a result of when the

light is most extreme, the resistor get to be least, current get to be greatest and it has enough

vitality to turn on the drove.

Result 5 Play on digital led that will construct number 0-9

Image beside is the digital led number that can construct a number

from 0-9. It is depend on which switch that push or turn on.

pg. 12

Build number 0

close switch A, B, C, D, E, G or push out 0, out 1, out 2,

out 3, out 4, out 5 on the MRboard switces

Build number 1

Close these switches B and C or push out 1 and out 2 on the

MRboard switces

Number 2

To build number 2, it needs to close switches A, B, D, E, F or

push out 0, out 1, out 3, out 4, out 6 on the MRboard switces

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Number 3

To build number 3, it needs to close switches A, B, D, C, D, F or


Number 4

To build number 4, it needs to close switches B, C, F, G or push

out 1, out 2, out 5, and out 6 on the MRboard switces

Number 5

To build number 5, it needs to close switches A, C, D, F, G or


pg. 14

Number 6

To build number 6, it needs to close switches A, C, D, E, F, G,

or push out 0, out 2, out 3, out 4, out 5, out 6 on the

MRboard switces

Number 7

To build number 7, it needs to close switches A, B, C or

push out 0, out 1, out 2 on the MRboard switces

Number 8

To build number 8, it needs to close all the switches A, B,

C, D, E, F, G or push out 0, out 1, out 2, out 3, out 4, out

5, out 6 on the MRboard switces

pg. 15

Number 9

To build number 9, it needs to close switches A, B, C, D, F, G or

push out 0, out 1, out 2, out 3, out 5, out 6 on the MRboard

switces

Discussion

In this investigation we were being acquainted with the ohm's law.

Resistance is a grating against the stream of current. The connection between Voltage, Current,

and Resistance, Voltage is the result of Current times resistance. We can discover one

parameter from those three utilizing the Ohm's law.

We additionally find that deliberate the resistance utilizing multimeter and read the shading

band delivered distinctive result, despite the fact that the resistance was the same. This due to

the resistance esteem that each resistors have it.

Another issue was we found that in circuit 2 & 3 the lights radiated is distinctive. Since the

resistance esteem additionally distinctive, brought on the light with bigger resistance dimmer.

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