WorksheetsElectricity and Magnetism Quizizz
Total questions: 23
Worksheet time: 20mins
Name
Class
Date
1.
What happens to the brightness of the bulbs as more are added to a parallel circuit?
a)
bulbs get brighter
b)
bulbs get dimmer
c)
bulbs stay the same
d)
bulbs stop working
2.
Which type of circuit has many branches or paths for electrons to follow?
a)
Parallel
b)
Series
c)
Direct
d)
Alternate
3.
How many grams of water would require 2200 joules of heat to raise its temperature from 34°C to 100°C? The specific heat of water is 4.18 J/g°C
a)
7.974 g
b)
0.125 g
c)
606 g
d)
66 g
4.
What is the voltage needed for a current of 100 A is traveling through a circuit with 1.1 ohms of resistance?
a)
110 V
b)
99.9 V
c)
50 V
d)
10 V
5.
Which of the following statements is NOT true for parallel circuits?
a)
The voltage in each path is the same.
b)
There is more than one path for electrons to reach resistors.
c)
The total current in a circuit will increase when a path is added.
d)
The total current is the same throughout the circuit.
6.
Which is a source for AC (alternating current)?
a)
battery
b)
wall outlet
7.
Which of the following statements is NOT true about direct current.
a)
Current that moves in one direction from negative to positive.
b)
May be created by a battery.
c)
Is generally NOT found in U.S. electrical outlets.
d)
The voltage and current are changing.
8.
If resistance in a closed series circuit increases, what will happen to the current?
a)
the current also increases
b)
the current will decrease
c)
the current is not affected
d)
the current will alternate direction
9.
If a magnet has unlike poles facing each other, what will happen?
a)
repel
b)
attract
c)
create current
d)
stick their tongues out at each other
10.
If a magnet has like poles facing each other, what will happen?
a)
repel
b)
attract
c)
create current
d)
stick their tongues out at each other
11.
If 3 bulbs are connected in a series circuit, each bulb...
a)
has voltage equal to the power source
b)
shares (divides) the voltage of the power source
c)
has equal brightness
d)
lessens the resistance in the circuit
12.
Where are magnets the strongest?
a)
at both poles
b)
at the north pole
c)
at the south pole
d)
in the middle
13.
When a switch is closed, will current flow through the circuit?
a)
yes
b)
no
14.
When a switch is open, will current flow through the circuit?
a)
yes
b)
no
15.
If a switch is added at A, B, C, and D, what will happen to the lights if switches A and B are open?
a)
the lights will remain lit
b)
none of the lights will work because there is no path available
c)
lights 2, 3, and 4 will work
d)
only light 2 will work
16.
If a switch is added at A, B, C, and D, what will happen to the lights all the switches are closed except C?
a)
the lights will remain lit
b)
none of the lights will work because there is no path available
c)
all the lights except 3 will work
d)
lights 1 and 2 will work
17.
In a closed circuit with a battery, wire, and bulb, what energy transformations are occurring?
a)
thermal to light
b)
chemical to electrical to light
c)
electrical to sound
d)
chemical to sound to heat
18.
When voltage in a circuit increases and resistance remains constant, what must happen to the current?
a)
current must decrease
b)
current must increase
c)
current is not affected by voltage or resistance
d)
current stays the same
19.
If more resistance is added to a circuit, but the current stays the same, what must happen to the voltage?
a)
it increases
b)
it decreases
c)
it will alternate
d)
it will remain the same
20.
What would the voltage be across the 20 ohms resistor?
a)
6 V- because all loads have the same voltage as the power source.
b)
12 V- because it has twice the resistance
c)
2 V- because the voltage is shared among the loads
d)
3 V- because it seems like a good number
21.
How can you make an electromagnet?
a)
wrap copper wire around an iron nail and attach it to a battery
b)
plug a magnet into an outlet
c)
wrap copper wire around a plastic straw
d)
rub a nail with a permanent magnet
22.
Which of the following statements do series and parallel circuits have in common?
a)
if one bulb goes out, they all go out
b)
each bulb has equal brightness
c)
they obey Ohm's Law (V=IR)
d)
the current is uniform (the same) throughout
23.
What is the difference in how electrons move in a direct current and an alternating current?
a)
DC- one direction, AC- changes direction
b)
DC- changes direction, AC- one direction
c)
DC- voltage changes, AC- voltage is steady
d)
DC- from outlet, AC- from battery
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