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DEPARTMENT OF EDUCATION

LUBANG VOCATIONAL HIGH SCHOOL

Lubang, Occidental Mindoro, 5109

Email: lubangtechvocschool@yahoo.com

SECOND PERIODICAL TEST IN PCHS 2

NAME: _____________________________________ DATE: ______________ SCORE: __________________1. How many light bulbs are in the diagram?

A) 4

B) 2

C) 1

D) 3

______2. What kind of circuit is shown above?A) concave

B) parallel

C) series

D) square

______3. How many batteries are in the diagram?A) 3B) 2

C) 1

D) 0

______4. What kind of circuit is shown below?A) convex

B) series

C) rectangle

D) parallel

______5. The diagram shows a switch that's________.A) closed

B) broken

C) open

D) loose

______6. The photo shows a symbol of what object?A) a battery

B) a car

C) a switch

D) a wire

______7. A device able to supply electrical energy is a ________.A) conductor

B) battery

C) nonconductor

D) microwave

______8. The pathway for electrical current is called a _______.A) circuit

B) highway

C) motor

D) cloud

______9. When the electrical current CANNOT flow, the circuit is _______.A) closed

B) open

C) broken

D) loose

______10. The positve (+) and negative (-) ends of the battery are called ______.A) battery terminals

B) battery knobs

C) battery sides

D) circuit diagram______11. A circuit that has only one electric flow is _________.

A) paper circuit

B) parallel circuit

C) battery circuit

D) series circuit

______12. The unit that measures a battery's strength is called ________.A) conductor

B) volt

C) current

D) circuit

______13. A device that opens and closes a circuit is a __________.

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A) electrical current

B) volt

C) conductor

D) switch

______14. Objects that allow electrical current to flow are called ______.A) conductors

B) nonconductors

C) batteries

D) circuits

______15. Objects that DO NOT allow electrical current to flow are called ______.A) conductors

B) nonconductors

C) batteries

D) circuits

______16. Which parts of the pencil are conductors?A) The eraser and point

B) The metal and point

C) The wood and eraser

D) The wood and metal

______17. Which activity did we compare the brightness of the light bulb?A) Simple Circuits

B) Solid Conductors

C) Series and Parallel Circuits

D) Paper-Clip Switch______18. Which activity did we discover what objects are conductors and what objects are

nonconductors?

A) Paper-Clip Switch

B) Series and Parallel Circuits

C) Simple Circuits

D) Solid Conductors

______19. How many volts are in the batteries we have used?A) 3

B) 1.5

C) 3v

D) 1.5v

______20. The series circuit with two batteries, gives how much voltage to a light bulb?A) 3v

B) 1.5v

C) 2v

D) 1v

______21. What circuit has the same potential difference in each component?a) series circuitb) parallel circuit

c) series and parallel circuit

d) none of these

______22. What is the total resistance and the total current on this circuit?(e.g. "1.00" ) R - ohm

(e.g. "1.00 A" ) I -

______23. What are the potential differences on A, B, C, D andE?

(e.g. "10 V" )

A -

B -

C -

D -

E -

What are the current on A, D? ( e.g. "10 A" )

A -

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D -

E -

What is the total resistance and current?

( e.g. "1" )R - ohm

(e.g. "1 A" ) I -

______24. What is the power consumption (total P) of the circuit below?( e.g. "100.00 W" )

______25. What theorem replaces a complex network with an equivalent circuit containing asource voltage and a series resistance?

A. Multinetwork B. NortonC. Thevenin D. Superposition

______26. What is the power dissipated by R2, R4, and R6?

A. P2 = 417 mW, P4 = 193 mW, P6 = 166 mW

B. P2 = 407 mW, P4 = 183 mW, P6 = 156 mW

C. P2 = 397 mW, P4 = 173 mW, P6 = 146 mW

D. P2 = 387 mW, P4 = 163 mW, P6 = 136 mW

______27. If the load in the given circuit is 120 k , what is the loaded output voltage?A. 4.21 V

B. 15.79 V

C. 16 V

D. 19.67 V

______28. In a seriesparallel circuit, individual component power dissipations are calculatedusing:

A. individual component parameters

B. a percent of the voltage division ratio squaredC. total current squared multiplied by the resistor values

D. a percent of the total power depending on resistor ratios

______29. The current flowing through an unloaded voltage divider is called the:A. resistor current

B. load current

C. bleeder current

D. voltage current

______30. When a Wheatstone bridge is in a balanced condition, the center voltmeter in thebridge will read:

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A. twice the source voltage

B. the same as the source voltage

C. zero volts

D. half the source voltage

______31. When a load is connected to a voltage divider, the total resistance of the circuit will:A. decrease

B. double

C. increase

D. remain the same

______32. With 21 V applied, if R1 = 5 ohms, R2 = 35 ohms, and R3 = 14 ohms, what is the currentof R2 if R1 is series connected with parallel circuit R2 and R3?

A. 200 mA

B. 800 mA

C. 600 mA

D. 400 mA

______33. What is the total resistance of a circuit when R1 (7 k ) is in series with a parallelcombination of R2 (20 k ), R3 (36 k ), and R4 (45 k )?

A. 4 kB. 17 k

C. 41 k

D. 108 k

______34. What is the total resistance of the given circuit?A. 92

B. 288

C. 17.7

D. 128

______35. What are the branch currents I2 and I3?

A. I2 = 4 mA, I3 = 2 mA

B. I2 = 4.5 mA, I3 = 2.5 mA

C. I2 = 5 mA, I3 = 3 mA

D. I2 = 5.5 mA, I3 = 3.5 mA

Prepared by:

Amir M. Villas