Peka Wajib Electric f52011

PEKA 1: AIMS1) TO STUDY THE RELATIONSHIP

BETWEEN CURRENT AND POTENTIAL DIFFERENCEACROSS CONSTANTAN WIRE

2) TO CALCULATE RESISTANCEOF THE CONSTANTAN WIRE

Name : …………………………………………….

Class : ………………………

Group : ………………………

Date : ………………………

SMK Abdul Rahman Talib,Kuantan Pahang.

SPM 2011

Diagram (a) shows a simple electric circuit. A voltmeter is used to measure the potential difference across a constantan wire in the circuit. Diagram (b) shows the voltmeter measured the potential difference across the same constantan wire but a low current flows through the wire.

Based on the above information and observation:

(carry out exp and write a report based on the following template)

(a) Inference : …………………………………………………………………………………………………

(b) Hypothesis : …………………………………………………………………………………………………

1 | R b a @ s m a r t – P h y s i c s P E K A f o r S P M 2 0 1 1

√ S

E1 PP1 Inference

PP2 Hypothesis

PP3 Aim/ objective

PP4 Variables (Manipulated, Responding and Fixed)

E1 PP1 Apparatus & Mateials

PP2 Draw any science apparatus in correct arrangement and accurately (label)

PP3 Method to control manipulated&responding variables

PP4 Obtaining Data

E2 PP1 Set up apparatus & material

PP2 Procedure & technique

PP3 Take and read the measurements correctly

E3 PP1 Draw a table (columns&rows with titles and units)

PP2 Manipulated variables (consistent)

PP3 Responding variables (consistent)

PP4 Secondary data (consistent)

E4 PP1 Title, axes with units

PP2 Uniform scale and 4 plotted points

PP3 Smooth curve / correct shape and the size > 50%

PP4 Gradient - technique and unit

PP5 Extrapolation and Intrapolation

PP6 Conclusion

PP7 Precautions

E5 PP1 Interested and inquiry

PP2 Systematic

PP3 Cooperative

PP4 Responsible

(CONDUCTING SKILL)

(DATA SKILL)

SCIENTIFIC INVESTIGATION

P1 (PLANNING SKILL)

P2 (PLANNING SKILL)

(INTERPRETING&CONCLUSION

SKILL)

(SCIENTIFIC ATTITUDE&MOR

AL VALUES)

SKOR E1

Aim:

Manipulated variable

:

Responding variable

:

Fixed variable :

List of apparatus

:

Arrangement of apparatus

Procedure 1) Switch on the circuit and adjust the rheostat until the reading on the ammeter, I = …………. A

2) Record the reading shown on the voltmeter, V.

3) Repeat the experiment for different values of current, I =…………, …………, …………, ………… and …………

Tabulation of data

Analysis data

: i) Draw a graph of V against I ii) Calculate resistance of constantan wire

Conclusion :

Precautions: (a): (b)



BETWEEN CURRENT AND POTENTIAL DIFFERENCEACROSS BULB

2) TO CALCULATE RESISTANCEOF BULB AT DIFFERENCECURRENT VALUES

Name : …………………………………………….

Class : ………………………

Group : ………………………

Date : ………………………


SPM 2011

Diagram (a) shows a simple electric circuit that consist a bulb. Diagram (b) shows the same bulb lights up dim when a low current flows through it.

Based on the above information and observation:

(carry out exp and write a report based on the following template)

(a) Inference : …………………………………………………………………………………………………

(b) Hypothesis : …………………………………………………………………………………………………


√ S

E1 PP1 Inference

PP2 Hypothesis

PP3 Aim/ objective





PP4 Obtaining Data













PP6 Conclusion

PP7 Precautions


PP2 Systematic

PP3 Cooperative

PP4 Responsible

(CONDUCTING SKILL)

(DATA SKILL)


P1 (PLANNING SKILL)

P2 (PLANNING SKILL)


SKILL)


AL VALUES)

SKOR E1

Aim:


:

Responding variable

:

Fixed variable :

List of apparatus

:


Procedure 1) Switch on the circuit and adjust the rheostat until the reading on the ammeter, I = …………. A

2) Record the reading shown on the voltmeter, V.

3) Repeat the experiment for different values of current, I =…………, …………, …………, ………… and …………

Tabulation of data

Analysis data

: i) Draw a graph of V against I (do start from zero and u should get a curve line) ii) Calculate resistance at I, 0.2 A and 0.4 A. (u should draw 2 tangents at 0.2 A and 0.4 A n draw a big triangle)

Conclusion :

Precautions : (a)


car battery

connecting wire

: (b)


BETWEEN LENGTH OF A WIRE AND ITS RESISTANCE

Name : …………………………………………….

Class : ………………………

Group : ………………………

Date : ………………………


SPM 2011

Diagram (e) and (f) show two identical bulbs with different brightness.


√ S

E1 PP1 Inference

PP2 Hypothesis

PP3 Aim/ objective





PP4 Obtaining Data













PP6 Conclusion

PP7 Precautions


PP2 Systematic

PP3 Cooperative

PP4 Responsible

(CONDUCTING SKILL)

(DATA SKILL)


P1 (PLANNING SKILL)

P2 (PLANNING SKILL)


SKILL)


AL VALUES)

SKOR E1

(e) (f)

(a) Inference : …………………………………………………………………………………………………

(b) Hypothesis : …………………………………………………………………………………………………

(c) Aim : …………………………………………………………………………………………………

Manipulated variable : …………………………………………

Responding variable

: …………………………………………

Fixed variable : …………………………………………

List of apparatus : …………………………………………………………………………………………………


Procedure 1) Switch on the circuit and place the jockey so that length of constantan wire, L is 10.0 cm. Adjust the rheostat until the ammeter shows I = ………… A

2) Record the reading of potential difference, V on the voltmeter. Calculate resistance of the wire using formula R = V/I

3) Repeat the experiment for different lengths of constantan wire, L= 20.0 cm, 30.0 cm, 40.0 cm and 50.0 cm.

Tabulation of data


Analysis data : Draw a graph of R against l

Conclusion :

Precautions: (a)

: (b)


BETWEEN THICKNESS OF A WIRE AND ITS RESISTANCE OR

TO STUDY THE RELATIONSHIPBETWEEN NUMBER OF WIRE(s) AND ITS RESISTANCE

Name : …………………………………………….

Class : ………………………

Group : ………………………

Date : ………………………


SPM 2011

Diagram (g) and (h) show two identical bulbs with different brightness.


√ S

E1 PP1 Inference

PP2 Hypothesis

PP3 Aim/ objective





PP4 Obtaining Data













PP6 Conclusion

PP7 Precautions


PP2 Systematic

PP3 Cooperative

PP4 Responsible

(CONDUCTING SKILL)

(DATA SKILL)


P1 (PLANNING SKILL)

P2 (PLANNING SKILL)


SKILL)


AL VALUES)

SKOR E1

(g) (h)

(a) Inference : …………………………………………………………………………………………………

(b) Hypothesis : …………………………………………………………………………………………………

(c) Aim : …………………………………………………………………………………………………


: …………………………………………

Responding variable

: …………………………………………

Fixed variable : …………………………………………

List of apparatus

: …………………………………………………………………………………………………


Procedure1) Connect a constantan wire across X and Y. Switch on the circuit and

adjust the rheostat until the ammeter shows I = ………… A2) Record the reading of potential difference, V on the voltmeter.

Calculate resistance of the wire using formula R = V/I3) Repeat the experiment for different number of constantan wire, n= 2, 3,

4 and 5.

Tabulation of data


Analysis data : Draw a graph of R against n

Conclusion :

Precautions: (a)

: (b)

PEKA 5: AIMS1. To determine relationship

between current and potential

difference across dry cells

2. Determine the electromotive

force, emf of dry cells

3. Determine the internal

resistance of dry cells

Name : …………………………………………….

Class : ………………………

Group : ………………………

Date : ………………………


SPM 2011

(a) Aim : To determine the electromotive force, emf and internal resistance, r of dry cells.

List of apparatus

: ……………………………………………………………………………………………



√ S

E1 PP1 Inference

PP2 Hypothesis

PP3 Aim/ objective





PP4 Obtaining Data













PP6 Conclusion

PP7 Precautions


PP2 Systematic

PP3 Cooperative

PP4 Responsible

(CONDUCTING SKILL)

(DATA SKILL)


P1 (PLANNING SKILL)

P2 (PLANNING SKILL)


SKILL)


AL VALUES)

SKOR E1

Procedure 1) Switch on the circuit. Adjust the rheostat until the current flows, I = …………….

2) Record the potential difference, V across the dry cells.

3) Repeat the experiment for different values of current,

I = ……………., ……………., ……………. and …………….

Tabulation of data

.

.

Analysis data : Draw a graph of V against I( u should get a graph that decreases linearly. Discuss with yor teacher about the axes)

Analysis graphs1. From the graph plotted, state the relationship between the

potential difference, V across the cell and the current flow, I?

2. By using the equation E = V + Ir

(a) Write V in terms of E, I and r.

(b) Explain how you can determine the values of E and r from the graph

plotted in this experiment.

(c) Determine the values of E and r from the graph.

(calculate gradient and determine y-intercept)


Conclusion :

Precautions1. .2. .


Peka Wajib Electric f52011

Documents

Transcript of Peka Wajib Electric f52011