⚡ Electrical Engineering Solved MCQs with Answers

Practice 757 approved ⚡ Electrical Engineering questions with verified answers from the 🛠️ Engineering Essentials subject for Pakistan exams.

757 solved MCQs

The maximum resistance value for a brown, red, yellow, gold resistor isAnswer: 126,000 Ω Which of the following is not a type of energy source?Answer: rheostat When placed close together, two positively charged materials willAnswer: repel The conductance of an 8 ohm resistance isAnswer: 125 mS Electrons in the outer orbit are calledAnswer: valences A thermistor is a type ofAnswer: resistor A two-terminal variable resistor is known as aAnswer: Rheostat Eight-tenths coulomb passes a point in 4 s. The current in amperes isAnswer: 0.2 A When the current is 2.5 A, how many coulombs pass a point in 0.2 s?Answer: 0.5 C The colored bands for a 4,700 ohm resistor with a ten percent tolerance areAnswer: yellow, violet, red, silver A material that does not allow current under normal conditions is a(n)Answer: insulator A multimeter measuresAnswer: current, voltage, and resistance If there is 6 A of current through the filament of a lamp, how many coulombs of charge move through the filament in 1.75 s?Answer: 10.5 C A wiper is the sliding contact in aAnswer: potentiometer A neutral atom with an atomic number of five has how many electrons?Answer: 5 A circuit breaker is aAnswer: resettable protective device An ammeter is an electrical instrument used to measureAnswer: current A red, red, orange, gold resistor has a nominal value ofAnswer: 22,000 Ω An ohmmeter is an instrument for measuringAnswer: resistance The current in a given circuit is not to exceed 24 A. Which value of fuse is best?Answer: 24 A An electric heater draws 3.5 A from a 110 V source. The resistance of the heating element is approximatelyAnswer: 31 Ω If 750 µA is flowing through 11 kΩ of resistance, what is the voltage drop across the resistor?Answer: 8.25 V The formula to find I when the values of V and R are known isAnswer: I = V/R A resistor is connected across a 50 V source. What is the current in the resistor if the color code is red, orange, orange, silver?Answer: 2.2 mA Approximately how many milliamperes of current flow through a circuit with a 40 V source and 6.8 kΩ of resistance?Answer: 5.9 mA How much resistance is required to limit the current from a 12 V battery to 3.6 mA?Answer: 3.3 k Ω What is the voltage source for a circuit carrying 2 A of current through a 36 Ω resistor?Answer: 72 V What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?Answer: 230 Ω How much voltage is needed to produce 2.5 A of current through a 200 Ω resistor?Answer: 500 V When there is 12 mA of current through a 1.2 k resistor, the voltage across the resistor isAnswer: 14.4 V