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7 questions
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  • Q1
    How could the strength of an electromagnet be increased?
    by reducing the length of the core of the electromagnet
    by decreasing the amount of current in the electromagnet
    by using rubber material as the core for the electromagnet
    by increasing the number of coils in the wires of the electromagnet
    300s
    PSc.3.3.5
  • Q2
    The circuit diagrams show four different arrangements of components. In which circuit will both bulbs shine brightly?
    A parallel circuit with multiple lightbulbs
    A series circuit with multiple light bulbs
    300s
    PSc.3.3.2
  • Q3
    How would decreasing the diameter of the wires in a circuit influence the resistance and flow of electrons in the circuit?
    It would increase the resistance by allowing more electrons to flow through the circuit.
    It would decrease the resistance by allowing more electrons to flow through the circuit.
    It would increase the resistance, causing fewer electrons to flow through the circuit.
    It would decrease the resistance, causing fewer electrons to flow through the circuit.
    300s
    PSc.3.3.3
  • Q4
    The concept of electromagnetic induction can be used to explain the operation of a
    wire.
    lightbulb.
    transformer.
    resistor.
    300s
    PSc.3.3.5
  • Q5
    A plastic rod is rubbed with a piece of wool and the plastic rod becomes negatively charged. A glass rod is rubbed with a piece of silk and the glass rod becomes positively charges. A charged object is placed near the plastic rod, and an attractive force is detected. How will the object react when near the glass rod?
    A repulsive force will occur.
    An electric discharge will occur.
    A neutralization will occur.
    An attractive force will occur.
    300s
    PSc.3.3.1
  • Q6
    A circuit has 3 amps of current and a resistance of 2 ohms. What is the voltage of the circuit?
    1.5 Volts
    6 Volts
    0.66 Volts
    1 Volt
    300s
    PSc.3.3.2
  • Q7
    A flashlight bulb connected to a 9 Volt battery draws a current of 1.5 amps. What is the power used by the flashlight bulb?
    0.16 Watts
    13.5 Watts
    7.5 Watts
    6 Watts
    300s
    PSc.3.3.2

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