TLE (Electronics)

TLE – Electronics

Name: _____________________________ Score: ______________

Directions: Choose the best answer; write your answer in the space provided before the number.

___1. Power is defined as:

A. the rate at which work is done B. work C. the conversion of energy D. joules

___2. How many paths do the electrons have to flow in a series circuit?

A. Zero B. One C. Two D. Many

___3. What is the unit of potential difference in Electronics?

A. Volt B. Watt C. Ampere D. Siemens

___4. What parameter defines as the characteristic that oppose the flow of current?

A. Resistor B. Resistance C. Capacitor D. Capacitance

___5.Base on the given formulas below; what is the formula of the total resistance of parallel circuit?

A. R = V/I B. C. D.

___6. Base on the given formulas below; what is the formula of the total resistance of series circuit?

A. R = V/I B. C.         D.

___ 7. Which of the following figure(s) is/are parallel circuit(s)?

I. II.

III. IV.

A. I, II, III & IV B. I, II & IV C. I & II D. I only

___8. If various objects are connected to form separate paths between the terminals of a source of electric current, they are said to be connected in?

A. Series B. Parallel C. Series-Parallel D. Complex circuit

___9. Which of the following is the symbol of SPST Switch?

A.       B.           C.           D.

___10. What will be the potential difference across a 50Ω resistor if a current of 500mA is flowing through it?

A) 0.25 Volts B) 5 Volts C) 25 Volts D) 50 Volts

Bottom of Form

___11. What current will be needed to produce a voltage of 5V cross a 12kΩ resistor?

A ) 2.4mA B) 416.67mA C ) 240mA D)  416.67µA

___12. What value of resistor will be needed to produce a current of 100mA when a voltage of 12V is applied across the resistor?

A ) 120Ω B ) 8.3K Ω C ) 1.2 K Ω D) 830

___13. What voltage will be developed across a 560Ω resistor if a current of 20mA is flowing through it?

A) 11.2mA B ) 112 Volts C ) 112mA D ) 11.2 Volts

___14. What is the unit of resistance?

A. Ohm B. Volt C. Coulomb D. Ampere

___15. What is the letter symbol of current?

A. C B. A C. V D. I

___16. What is the unit of the potential difference?

A. Ampere B. Volt C. Hertz D. Decibel

___17. A series circuit has more than one resistor. What is a resistor?

A: anything that refuses to do work  B: anything that uses electricity to do work

C: a machine that will not work fast D: anything that uses voltage to do work

___18. What current passing through 10kΩ resistor will produce a voltage of 8V cross it?

A ) 800mA B ) 800µA C ) 8mA D ) 80µA

___19. What is the power dissipated by a circuit that passes a current of 1.6A when a voltage of 6V is connected across it?

A ) 3.75 W B ) 9.6 W C ) 3.75 J D ) 267 mW

___20. What is the symbol of ohm?

A. Ω B. Φ C. Σ D. Θ

___21. What power is dissipated by a 40 Ω resistor when a voltage of 6V is connected across it?

A ) 267 W B ) 6.67 W C ) 267 mW D. ) 900 mW

___22. How much power is dissipated by a 150 Ω resistor when a current of 100 mA flows through it?

A ) 1.5 W B ) 66.67mW  C ) 2.25 mW D ) 2.5 W

___23. A resistor is needed to reduce the voltage supplying a circuit by 7V when the circuit draws a current of 100mA. Choose the best resistor for the job from the values below.

A ) 700 Ω 2W  B ) 70 Ω 0.5W  C ) 680 Ω 5W D) 68 Ω 1 W

___24. Which is the correct statement of Ohm's Law?

  A.  R = IV B.    V = IR C.     I = R/V D.    V = R/I

TABLE – 1 (Ohms Law)
Column	Voltage (Volt)	Current (Ampere)	Resistance (Ohm)
A		0.01	1.5K
B	220
C			5.6M
D	560	0.56
E	110		4.7K

___27. Based in the data on Table 1; what is the supply voltage in Column C, if I = 5.17mA?

A. 28.952 MV B. 2.895 MV C. 289.520 KV D. 28.952 KV

___28. Based in the data on Table 1; calculate the resistance in Column D.

A. 1000 Ω B. 1K C. 100 D. 1000 M

___29. Based in the data on Table 1; calculate the resistance in Column E.

A. 23.404A B. 23.404 C. 23.404 mA D. 23.404MA

___30. Based in the following data V = 220V; R = 100; calculate power.

A. 22 KW B. 484W C. 4.84 MW D. 48.4 KW

___31. Which statement regarding Ohm's Law is correct?

A. An electrical conductor's resistance depends on the potential difference it experiences

B.  Increasing the resistance in a circuit always decreases the potential difference across it

C. When resistance increases in a circuit with a specific potential difference then current must also increase

D. If resistance is kept constant, potential difference changes directly with changes in current

___32. When a current of 10.0 A flows through a 50.0-Ω resistor in a circuit, what is the voltage of that circuit?

A. 500 V B. 5 V C. 0.20 V D. 60 V

___33. A 9-V battery is hooked up to a 3-Ω resistor. What current is flowing through this circuit?

A. 0.3 A B. 27 A C. 3 A D. 12 A

___34. Which word correctly completes this statement about electrical safety?

Some electronic devices, such as computers, retain some _____ even when they are unplugged, so you should not attempt to repair them yourself.

A. charge B. resistance C. current D. voltage

___35.

___36.

___37. Which of the following wires has the greatest cross-sectional area?

A. 9 AWG B. 14 AWG C. 22 AWG D. 30 AWG

___38.  What is the unit of measure for electrical pressure or electromotive force?

A. amps B. ohms C. volts D. watts

___39.  What is the applied voltage on a circuit in which .5A is flowing and 10 W is generated?

A. 2 V B. 5 V C. 20 V D. 50 V

___40. How many watts are in 100 microwatts?

A. 0.01 milliwatts B. 0.1 milliwatts C. 1.0 milliwatts D. 10 nanowatts

___41. A precision current shunt is measuring 100 millivolts across it. This indicates a current of 25 A. What is the actual resistance of this shunt?

A. 0.004 Ω B. 0.04 Ω C. 0.25 Ω D. 2.5 Ω

___42. A flow of electrons in one direction:

A) AC Voltage B) Alternating Current C) Direct Voltage D) Direct Current

___43. A flow of electrons through a material:

A) Voltage B) Current C) Resistance D) Conductance

___44. The pressure that pushes electrons through a material:

A) Voltage B) Conduction C) Current D) Resistance

___45. A material that has very high resistance to electron flow:

A) Conductor B) Resistor C) Semiconductor D) Insulator

___46. A material that allows electrons to flow easily:

A) Conductor B) Resistor C) Semiconductor D) Insulator

___47. A material that produces electrical friction and restricts the flow of electrons:

A) Conductor B) Resistor C) Semiconductor D) Insulator

___48. Which of the following is the symbol of Photo diode?

A.                       B.            C.                   D.

___49. Which one is NOT the formula in getting voltage drop of a circuit?

A) V= I X R B) V =   C)     V = D) V= I2 X R

___50. In electrical letter symbol; E or Ve stands for?

A. Electromotive Force B. Electrostatic Discharge C. Electrical Voltage D. Energy

___51. In electronic letter symbol; the symbols of current is “I”; the meaning of this symbol is?

A. Induce B. Infectivity C. Infinity D. Intensity

___52. It is the amount of flow of free electrons?

A. Power B. Current C. Energy D. Voltage

___53.

___54. If voltage across a resistance doubles

A. the current is halved B. the resistance doubles

C. the current is unchanged D. none of the above

___55.

___56. Ohm's law describes the mathematical relationship between

A. ohms, kilohms, and megohms B. resistor size and resistor value

C. resistance, voltage, and current D. none of the above

___57. What electromotive force would cause 20 A of current to flow through a 500 omega.gif resistor?

A. 0.04 V B. 2.5 V C. 25.0 V D. 10,000 V

___58.

___59. If current through a resistance is halved

A. the resistance is halved B. the voltage is halved

C. the voltage doubles D. none of the above

___60.  

A. 831Ω B. 1.83KΩ C. 831KΩ D. 151KΩ

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G-ONE T. PAISONES

Teacher - 1

The truth is incontrovertible. Malice may attack it, ignorance may deride it, but in the end, there it is.

Winston Churchill

“The meaning of an education learned by a person is not truly measured by his growth attained in the profession, but by his action reflected in his assigned task consistently towards bringing the mark of excellence and perfection.” 
― Anuj Somany