NEW
Font size
WorksheetsElectricity and Random Topics
Total questions: 20
Worksheet time: 29mins
Which pair of quantities represent scalar
quantities?
(1) displacement and velocity
(2) displacement and time
(3) energy and velocity
(4) energy and time
As a student runs a plastic comb through her
hair, the comb acquires a negative electric
charge. This charge results from the transfer of
protons from the comb to her hair
protons from her hair to the comb
electrons from the comb to her hair
electrons from her hair to the comb
An object is moving with constant speed in a
circular path. The object’s centripetal
acceleration remains constant in
magnitude, only
direction, only
both magnitude and direction
neither magnitude nor direction
An ionized calcium atom has a charge of
+2 elementary charges. If this ion is accelerated
through a potential difference of 2.0 × 103 volts,
the ion’s change in kinetic energy will be
1.0 × 103 eV
2.0 × 103 eV
3.0 × 103 eV
4.0 × 103 eV
A total charge of 100. coulombs flows past a
fixed point in a circuit every 500. seconds. What
is the current at this point in the circuit?
0.200 A
5.00 A
5.00 × 104 A
1.25 × 1018 A
An aluminum wire of length 1.0 meter has a
resistance of 9.0 × 10–3 ohm. If the wire were cut
into two equal lengths, each length would have a
resistance of
2.8 × 10–8 Ω
4.5 × 10–3 Ω
9.0 × 10–3 Ω
1.8 × 10–2 Ω
In an operating electrical circuit, the source of
potential difference could be
a voltmeter
a battery
an ammeter
a resistor
A lightbulb with a resistance of 2.9 ohms is
operated using a 1.5-volt battery. At what rate is
electrical energy transformed in the lightbulb?
0.52 W
0.78 W
4.4 W
6.5 W
A particle enters the electric field between two
oppositely charged parallel plates, as
represented in the diagram. Which particle will be deflected toward the positive plate as it enters the electric field?
dust
proton
electron
neutron
The diagram represents a 2.0-kilogram toy car moving at a constant speed of 3.0 meters per second counterclockwise in a circular path with a radius of 2.0 meters. At the instant shown in the diagram, the centripetal force acting on the car is
4.5 N north
4.5 N west
9.0 N north
9.0 N west
In which electric circuit would the voltmeter read 10 volts?
In the diagram, a negatively charged rod is placed between, but does not touch, identical small metal spheres R and S hanging from insulating threads. What can be concluded if the rod repels sphere R but attracts sphere S?
Sphere R must be negative and sphere S must be positive.
Sphere R must be negative and sphere S may be positive or neutral.
Sphere R must be positive and sphere S must be negative.
Sphere R must be positive and sphere S may be negative or neutral.
Which combination correctly pairs a vector quantity with its corresponding unit?
weight and kg
velocity and m/s
speed and m/s
acceleration and m2/s
A charged particle is located in an electric field where the magnitude of the electric field strength is 2.0 × 103 newtons per coulomb. If the magnitude of the electrostatic force exerted on the particle is 3.0 × 10–3 newton, what is the charge of the particle?
1.6 × 10–19 C
1.5 × 10–6 C
6.0 C
6.7 × 105 C
An electric circuit contains a battery, three lamps, and an open switch, as represented in the diagram. When the switch is open, there is an electric current in
lamp I, only
lamps II and III, only
lamps I, II, and III
none of the lamps
The diagram represents a 3.0-ohm resistor connected to a 12-volt battery. Meters X and Y are correctly connected in the circuit. What are the readings on the meters?
X = 12 V and Y = 0.25 A
X = 12 V and Y = 4.0 A
X = 0.25 A and Y = 12 V
X = 4.0 A and Y = 12 V
A combination of two identical resistors connected in series has an equivalent resistance of 10. ohms. What is the equivalent resistance of the combination of these same two resistors when connected in parallel?
2.5 Ω
5.0 Ω
10. Ω
20. Ω
Copper is a metal commonly used for electrical wiring in houses. Which metal conducts electricity better than copper at 20°C?
aluminum
gold
nichrome
silver
When only one lightbulb blows out, an entire string of decorative lights goes out. The lights in this string must be connected in
parallel with one current pathway
parallel with multiple current pathways
series with one current pathway
series with multiple current pathways
Which measurement is closest to 1 × 10−2 meter?
diameter of an atom
width of a student's finger
length of a football field
your teacher's height
