WorksheetsResistors and circuits
Total questions: 20
Worksheet time: 13mins
Name
Class
Date
1.
What is the equivalent or total resistance (Re) across this circuit?
a)
3 kΩ
b)
10 kΩ
c)
13 kΩ
d)
18 kΩ
2.
Which resistor will prevent the most current flow?
a)
1 ohm
b)
100 ohms
c)
1000 ohms
d)
0.5k ohms
3.
How does resistance affect current?
a)
less resistance - less current
b)
more resistance - less current
c)
more resistance - more current
d)
resistance does not affect current
4.
Which one, top or bottom, offers more resistance?
a)
top
b)
bottom
c)
neither
5.
Which one, top or bottom, will give off more heat?
a)
top
b)
bottom
c)
neither
6.
Power = ?
a)
Current
b)
Voltage
c)
Current X Voltage
d)
Current / Voltage
7.
What happens to the current in a parallel circuit?
a)
It is the same before the path splits and after the paths rejoin
b)
It is divided in two
c)
It is doubled
d)
It increases when the paths split
8.
Comparing branches in a parallel circuit:
a)
the voltage is the same in all branches
b)
the voltage depends on the resistance
c)
the resistance depends on the voltage
d)
the resistance is the same in all branches
9.
Comparing series vs parallel circuits:
a)
Series: voltage changes, current is constant
b)
Series: Current changes, voltage is constant
c)
Parallel: both voltage AND current change
d)
Parallel: neither voltage nor current change
10.
Increasing the number of branches in a parallel circuit ...
a)
... increases the total resistance
b)
... decreases the total resistance
c)
... makes no difference to the total resistance
11.
Every time the number of components in a series circuit increases,
a)
... the current decreases more
b)
... the current increases more
c)
... the voltage increases more
12.
Comparing 2 bulbs in series vs 2 bulbs in parallel:
a)
Brighter in series because they share the current
b)
Brighter in parallel because the current is higher
c)
Brighter in series because there is less electricity
13.
Power outlets in your home are arranged ...
a)
In series so that it's simpler
b)
In parallel so that they all receive the same current
c)
In parallel so that they all receive the same voltage
14.
What does the battery / cell provide?
a)
Voltage
b)
Current
c)
Resistance
15.
Suppose you have a 100. ohm resistor parallel to two 100. ohm resistors in series. what is their total resistance?
a)
66.7 ohms
b)
300. ohms
c)
69.69 ohms
d)
600. ohms
16.
resistance?
a)
1/rtot = (1/5) + (1/8) + (1/3) Ω
b)
120 Ω
c)
2.5189873 Ω
d)
1/rtot = (1/5) * (1/8) * (1/3) Ω
17.
What is I1-?
a)
2 A
b)
4 mA
c)
1.33 mA
d)
1.33 A
18.
What is VR2-?
a)
4 V
b)
8 V
c)
6 V
d)
2 V
19.
What is VR1-?
a)
4 V
b)
6 V
c)
8 V
d)
2 V
20.
What is I2-?
a)
2 mA
b)
4 A
c)
1.33 mA
d)
1.33 A
100 %
