Electricity And Magnetism: Question Preview (ID: 27587)


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What happens when 2 like charges come near each other?
a) attract b) repel c) d)
What happens when 2 unlike charges come near each other?
a) attract b) repel c) d)
Which of the following is an example of static charges that build up through contact?
a) rubber soles on a wool carpet b) the ground below a storm cloud c) a doorknob near someone's hand d) hair near a charged balloon
In a circuit, a switch
a) connects different parallel paths b) opens and closes the path of charge c) turns the conductor on and off d) follows the path of least resistance
When the heater stopped working in a hair dryer, the fan stopped working, too. Which statement is true?
a) The heater and fan were connected in a series circuit. b) The heater and fan were connected in a parallel circuit. c) The heater and fan were no longer connected to the switch. d) The heater and fan developed a short circuit.
In a circuit, a conductor
a) open and closes the circuit b) converts electrical energy into another form of energy c) provides a path for the charge to flow d) provides electrical energy to the circuit
The part of the circuit that converts electrical energy into another form of energy is the
a) switch b) conductor c) voltage source d) electrical device
The part of the circuit that provides the electrical energy to the circuit is the
a) switch b) conductor c) voltage source d) electrical device
What evidence proves that a circuit is closed?
a) The light is on. b) The switch is down (closed) c) There is no gaps in the circuit d) All of the above
What happens to the brightness of the bulbs when more bulbs are added to a series circuit?
a) Brighter b) Dimmer c) Stays the same d)
What happens to the brightness of the bulbs when more voltage sources are added?
a) Brighter b) Dimmer c) Stays the same d)
Copper, steel, aluminum and nickel are all examples of
a) conductors b) insulators c) d)
Cotton, wood, air and rubber are all examples of
a) conductors b) insulators c) d)
You walk past a string of small lights around a window frame. Only 2 of the bulbs are burned out. Is this a series or parallel circuit?
a) Series b) Parallel c) d)
What type of circuit only has 1 path or branch for the electrical current to flow to?
a) Series b) Parallel c) d)
What is an advantage of a series circuit?
a) More than 1 path to the voltage source b) Not all electrical devices need to be in working order for the other devices to work c) Uses a minimal amount of wire d) Because there is more than 1 branch/path back to the voltage source, each bulb burns at their brightest
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