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DP IB Physics: HL

Topic Questions

Home / IB / Physics: HL / DP / Topic Questions / 5. Electricity & Magnetism / 5.2 Heating Effect of Electric Currents / Multiple Choice


5.2 Heating Effect of Electric Currents

Question 1

Marks: 1

Select the row which correctly identifies the three circuit symbols shown below. 

5-2-q1-sl-easy-mcq-phy-

  I. II. III.
A. heating element potentiometer variable resistor
B. heating element fuse thermistor
C. resistor ammeter variable resistor
D. voltmeter fuse thermistor
    Choose your answer
      
    Key Concepts
    Circuit Diagrams

    Question 2

    Marks: 1

    Identify two features of the circuit shown.

    5-2-q2-sl-easy-mcq-phy-

    A. a bulb is in series with a fixed resistor current can be measured through the cell
    B. a bulb is protected by a fuse current can be measured through the bulb
    C. a bulb is protected by a fuse voltage can be measured across the cell
    D. a capacitor is in series with a fuse voltage can be measured across the bulb
      Choose your answer
        

      Question 3

      Marks: 1

      Electrons moving through a metal wire transfer some of their electric potential energy to the positive ions of the metal. Which two changes are caused by this energy transfer?

        Kinetic energy of the lattice Resistance of the metal wire
      A. decreases decreases
      B. decreases increases
      C. increases decreases
      D. increases increases
        Choose your answer
          
        Key Concepts
        Resistance

        Question 4

        Marks: 1

        Two identical 10 Ω resistors are connected first in series, and then in parallel, as shown.


        5-2-q4-sl-easy-mcq-phy

        Determine the correct combined resistance of each arrangement.

          Series Parallel
        A. 5 Ω 20 Ω
        B. 10 Ω 20 Ω
        C. 20 Ω 10 Ω
        D. 20 Ω 5 Ω
          Choose your answer
            

          Question 5

          Marks: 1

          Select the graph which best describes the I-V characteristic of an ohmic resistor.

          • 5-2-q5-opt-a-sl-easy-mcq-phy

          • 5-2-q5-opt-b-sl-easy-mcq-phy

          • 5-2-q5-opt-c-sl-easy-mcq-phy

          • 5-2-q5-opt-d-sl-easy-mcq-phy

          Choose your answer
            
          Key Concepts
          I-V Characteristics

          Question 6

          Marks: 1

          A wire with resistivity ρ, length L and cross-sectional area A has resistance R.

          5-2-q6-1-sl-easy-mcq-phy

          Which of the wire, made from the same material, will also have resistance R?

          5-2-q6-2-sl-easy-mcq-phy

          • I only

          • I and II

          • II and III

          • III only

          Choose your answer
            
          Key Concepts
          Resistivity

          Question 7

          Marks: 1

          Which of the following statements are benefits of using parallel circuits when connecting components in homes and vehicles?

          1. A single power source supplies all lights and appliances with the same potential difference 
          2. The current is the same in all branches so only one type of fuse is needed
          3. If one bulb breaks, the appliances in other branches continue to work

          • I and II

          • I and III

          • II and III

          • I, II and III

          Choose your answer
            

          Question 8

          Marks: 1

          A student is provided with three identical cells, each having a potential difference of V.

          For the two arrangements shown, what is the total potential difference across the array?

          5-2-q8-sl-easy-mcq-phy

            Series Parallel

          A.

          V 3 V
          B. 1 third V 3 V
          C. 3 V 1 third V
          D. 3 V V
            Choose your answer
              

            Question 9

            Marks: 1

            A particular quantity X is an important factor when calculating for electrical circuits. X can be found using several different equations, as shown.

            X space equals space W over t

             
            X space equals space I V X space equals space I squared R X space equals space V squared over R

            Which option identifies X?

            • Current, I

            • Power, P

            • Resistance, R

            • Resistivity, ρ

            Choose your answer
              
            Key Concepts
            Power Dissipation

            Question 10

            Marks: 1

            Potential divider circuits are used to control outputs that are often changed, such as volume and brightness. For the potential divider circuit shown, identify the output voltage, Vout in terms of the input voltage, Vin.

            5-2-q10-sl-easy-mcq-phy

            • V subscript o u t end subscript space equals space 1 fourth V subscript i n end subscript

            • V subscript o u t end subscript space equals space 1 third V subscript i n end subscript

            • V subscript o u t end subscript space equals space V subscript i n end subscript

            • V subscript o u t end subscript space equals space 3 over 4 V subscript i n end subscript

            Choose your answer