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B.Tech Electronics Electronics Engineering — practice questions

Explore 30 free Electronics Engineering questions in B.Tech Electronics Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Electronics Engineering questions and exercises with answers

Showing questions 1–30 of 30.

A battery pushes charge around a circuit. That special potential difference is called:Read the answer and worked solution →A student thinks emf is a kind of push in newtons. In truth emf is not a:Read the answer and worked solution →Inside a cell, negative charge is moved back to the negative terminal. The source acts as a:Read the answer and worked solution →A technician places probes on the two ends of a battery. That reading is the:Read the answer and worked solution →A perfect battery holds its terminal voltage no matter the current. It has no:Read the answer and worked solution →A real battery is compared to a perfect one. Its terminal voltage is always:Read the answer and worked solution →Chemicals inside a cell resist the current they create. That opposition is called:Read the answer and worked solution →Two cells of different chemistry give different voltages. The emf is set by the chemicals and the:Read the answer and worked solution →A nickel cadmium cell has been deeply drained many times. Its internal resistance:Read the answer and worked solution →A torch draws more current from its cell. The terminal voltage then:Read the answer and worked solution →Three resistors sit one after another so the same current passes through each. They are in:Read the answer and worked solution →A string of nine lamps is wired in series and one bulb burns out. The rest of the lamps:Read the answer and worked solution →Three unequal resistors sit in series across one battery. Each resistor receives:Read the answer and worked solution →Two lamps are wired in parallel across a battery. The voltage across each lamp is:Read the answer and worked solution →More resistors are added in parallel to a supply. The total resistance of the set:Read the answer and worked solution →Three branches carry current away from a junction. The current entering equals the:Read the answer and worked solution →A rule says charge entering a junction equals charge leaving it. That is Kirchhoff's:Read the answer and worked solution →Going right round any closed loop, the voltage changes add up to:Read the answer and worked solution →A lab needs to read the current in one branch. The meter to use is an:Read the answer and worked solution →An ammeter must carry the very current it reads. It is therefore wired in:Read the answer and worked solution →A voltmeter must not steal current from the circuit. Its own resistance is therefore:Read the answer and worked solution →A flash camera takes seconds to get ready because it is charging a:Read the answer and worked solution →Catch the circuit partsRead the answer and worked solution →Pop the series cluesRead the answer and worked solution →Run the circuit gatesRead the answer and worked solution →Slice the circuit termsRead the answer and worked solution →Series or parallelRead the answer and worked solution →Sort the circuit ideasRead the answer and worked solution →Type the numberRead the answer and worked solution →Circuit bingoRead the answer and worked solution →

Worked practice questions

A battery pushes charge around a circuit. That special potential difference is called:

  1. Emf
  2. Elm
  3. Ebb
  4. Eon
Show answer and solution

Correct answer: A. Emf

1. A source must lift charge to a higher potential. 2. That lifting ability has its own name. 3. It is called emf. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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A student thinks emf is a kind of push in newtons. In truth emf is not a:

  1. Fibre
  2. Force
  3. Fluid
  4. Flame
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Correct answer: B. Force

1. The name survives from older usage. 2. The quantity is measured in volts. 3. So emf is not a force at all. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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Inside a cell, negative charge is moved back to the negative terminal. The source acts as a:

  1. Charge pump
  2. Charge brake
  3. Charge mirror
  4. Charge magnet
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Correct answer: A. Charge pump

1. The potential difference must be kept up. 2. Charge has to be driven back against the field. 3. So the source acts as a charge pump. _Source: OpenStax University Physics Volume 2, Chapter 10, Direct-Current Circuits._

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More Physics topics

Direct Current CircuitsPhysics