LADWP Electricity 1 Test 1 Study Guide 2026 | Complete
Review | Graded A+
1. Describe the main difference between series and parallel circuits in terms of
current flow.
In a series circuit, current flows through a single path, while in a
parallel circuit, current can flow through multiple paths.
In a series circuit, voltage is constant, while in a parallel circuit, voltage
varies.
In a series circuit, components are connected end-to-end, while in a
parallel circuit, components are connected side-by-side.
In a series circuit, resistance decreases, while in a parallel circuit,
resistance increases.
2. The amount that a given conductor resists the flow of electric current is
measured in _.
Volts
lambs
Watts
Coulombs
Ohms
3. Describe why distilled water is considered a better insulator compared to tap
water.
Copper is a better conductor than distilled water.
Distilled water has fewer impurities and ions, making it a better
insulator than tap water.
, Aluminum is used in circuits because it is an insulator.
Tap water contains more minerals, which enhance its conductivity.
4. What type of material is characterized by having fewer than 4 electrons in its
outer shell?
Insulator
Semiconductor
Resistor
Conductor
5. An electron has:
B. A positive electrical charge
E. A mass equal to the proton
D. A mass of one
A. A negative electrical charge
C. No electrical charge
6. What type of charge does an electron carry?
Positive charge
Neutral charge
Variable charge
Negative charge
7. Resistance opposes the flow of current in a circuit and is measured in .
volts
, joules
watts
ohms
8. Describe what occurs when the negative lead of a digital multimeter is
connected to a more positive point in a circuit while measuring voltage.
The display reading will show a negative value, indicated by a
MINUS symbol.
The circuit will become a dead short.
The DMM will display an error message.
The DMM will read zero volts.
9. Describe how the total resistance in a series circuit affects the current flow
when a voltage is applied.
The total resistance in a series circuit only affects voltage, not current.
The total resistance in a series circuit increases the overall
resistance, which decreases the current flow for a given voltage.
The total resistance in a series circuit decreases the overall resistance,
which increases the current flow.
The total resistance in a series circuit has no effect on current flow.
10. Describe how Ohm's law relates voltage, current, and resistance in an
electrical circuit.
Ohm's law indicates that voltage is the only factor affecting current
flow.
Ohm's law states that the current flow in a circuit is directly
proportional to the voltage across it and inversely proportional to
, the resistance.
Ohm's law applies only to alternating current circuits.
Ohm's law shows that resistance has no effect on current flow.
11. If a new material is discovered with 5 electrons in its outer shell, how would it
behave in an electrical circuit compared to a conductor?
It would behave as a superconductor, enhancing electrical flow.
It would behave as a semiconductor, allowing limited flow of
electricity.
It would behave as a conductor, allowing electricity to flow freely.
It would behave as an insulator, restricting the flow of electricity.
12. Describe the role of electrons in an atom and how their charge affects
electrical properties.
Electrons are neutral particles that contribute to the atomic structure.
Electrons are positively charged particles found in the nucleus,
affecting the atom's mass.
Electrons are negatively charged particles that orbit the nucleus of
an atom, influencing the atom's electrical properties.
Electrons have no charge and are irrelevant to electrical properties.
13. The figure shows an "OL" on the Digital Multimeter when measuring
resistance in a circuit.
Which of the following could be the cause in the circuit?
Review | Graded A+
1. Describe the main difference between series and parallel circuits in terms of
current flow.
In a series circuit, current flows through a single path, while in a
parallel circuit, current can flow through multiple paths.
In a series circuit, voltage is constant, while in a parallel circuit, voltage
varies.
In a series circuit, components are connected end-to-end, while in a
parallel circuit, components are connected side-by-side.
In a series circuit, resistance decreases, while in a parallel circuit,
resistance increases.
2. The amount that a given conductor resists the flow of electric current is
measured in _.
Volts
lambs
Watts
Coulombs
Ohms
3. Describe why distilled water is considered a better insulator compared to tap
water.
Copper is a better conductor than distilled water.
Distilled water has fewer impurities and ions, making it a better
insulator than tap water.
, Aluminum is used in circuits because it is an insulator.
Tap water contains more minerals, which enhance its conductivity.
4. What type of material is characterized by having fewer than 4 electrons in its
outer shell?
Insulator
Semiconductor
Resistor
Conductor
5. An electron has:
B. A positive electrical charge
E. A mass equal to the proton
D. A mass of one
A. A negative electrical charge
C. No electrical charge
6. What type of charge does an electron carry?
Positive charge
Neutral charge
Variable charge
Negative charge
7. Resistance opposes the flow of current in a circuit and is measured in .
volts
, joules
watts
ohms
8. Describe what occurs when the negative lead of a digital multimeter is
connected to a more positive point in a circuit while measuring voltage.
The display reading will show a negative value, indicated by a
MINUS symbol.
The circuit will become a dead short.
The DMM will display an error message.
The DMM will read zero volts.
9. Describe how the total resistance in a series circuit affects the current flow
when a voltage is applied.
The total resistance in a series circuit only affects voltage, not current.
The total resistance in a series circuit increases the overall
resistance, which decreases the current flow for a given voltage.
The total resistance in a series circuit decreases the overall resistance,
which increases the current flow.
The total resistance in a series circuit has no effect on current flow.
10. Describe how Ohm's law relates voltage, current, and resistance in an
electrical circuit.
Ohm's law indicates that voltage is the only factor affecting current
flow.
Ohm's law states that the current flow in a circuit is directly
proportional to the voltage across it and inversely proportional to
, the resistance.
Ohm's law applies only to alternating current circuits.
Ohm's law shows that resistance has no effect on current flow.
11. If a new material is discovered with 5 electrons in its outer shell, how would it
behave in an electrical circuit compared to a conductor?
It would behave as a superconductor, enhancing electrical flow.
It would behave as a semiconductor, allowing limited flow of
electricity.
It would behave as a conductor, allowing electricity to flow freely.
It would behave as an insulator, restricting the flow of electricity.
12. Describe the role of electrons in an atom and how their charge affects
electrical properties.
Electrons are neutral particles that contribute to the atomic structure.
Electrons are positively charged particles found in the nucleus,
affecting the atom's mass.
Electrons are negatively charged particles that orbit the nucleus of
an atom, influencing the atom's electrical properties.
Electrons have no charge and are irrelevant to electrical properties.
13. The figure shows an "OL" on the Digital Multimeter when measuring
resistance in a circuit.
Which of the following could be the cause in the circuit?
