Electrical Resistance
This material has a lower resistance than iron, even if they have the same shape and size, due to its higher conductivity.
What is copper?
This is what drives electric current through a circuit by creating an electrical potential difference.
What is voltage (or electric potential difference)?
This is what travels through a circuit at nearly the speed of light, responsible for establishing the current.
What is the electric field?
The flow of electrical charge that occurs when there is a potential difference between two ends of a conductor.
What is electric current?
This is the rate at which electric energy is converted into another form, such as mechanical energy, heat, or light.
What is electric power?
This is the unit of electrical resistance, symbolized by the Greek letter omega (Ω).
Q: What is the ohm?
This type of current flows in one direction only.
What is direct current (DC)?
This is the current flowing through a wire with a resistance of 5Ω and a voltage of 10 V.
What is 2 A?
This is the unit used to measure electric potential difference, defined as 1 joule per coulomb of charge.
What is a volt (V)?
This is what flows through a wire when it is plugged into an outlet, not electrons.
What is energy?
One of these is equal to one coulomb of charge flowing per second.
What is an ampere?
In the chocolate factory analogy, this is like the strength of the conveyor belt, pushing the chocolates forward.
What is voltage?
A: Ohm’s Law states that voltage equals this multiplied by current.
Q: What is resistance?
This form of current reverses direction periodically, typically used in homes and businesses.
What is alternating current (AC)?
When three resistors of 2Ω, 4Ω, and 6Ω are connected in this type of circuit, the total resistance is 12Ω.
What is a series circuit?
This type of device, such as a battery or generator, provides the voltage needed to push electric charges through a circuit.
What is a voltage source?
This is the difference between behavior of electrons in an AC versus DC circuit.
What is their type of movement? Oscillation versus flow.
In a wire carrying 5 amperes of current, 5 coulombs of charge flow per second. What happens to the amount of charge passing through the wire if the current is doubled to 10 amperes?
What is 10 coulombs of charge per second?
This is the unit of power, equivalent to one joule of energy per second.
What is a watt?
A: If a circuit has 2 amps of current and 6 volts of potential difference, this is the resistance.
What is 3 ohms?
Nikola Tesla championed this type of current, which is used in power grids today.
What is alternating current (AC)?
The equivalent resistance of two resistors, 3Ω and 6Ω, connected in this type of circuit is 2Ω.
What is a parallel circuit?
The flow of this through a conductor is caused by an electric potential difference.
What is electric current?
What is resistance?
These are freely moving electrons in a metal atom, not bound to the nucleus, allowing electric current to flow.
What are conduction electrons?
This formula expresses the relationship between energy, power, and time: energy = power × time.
What is Energy = Power × Time?
A: In Ohm’s Law, this symbol represents electric current.
What is I?
Batteries supply this type of current.
What is direct current (DC)?
The total resistance in a series circuit is defined by this.
What is sum of all resistance?
Energy stored due to position of charge in an electric field.
What is electrical potential energy?
When 110 volts is applied to a lamp, this is the energy dissipated by each coulomb of charge.
What is 110 joules?
Electric current will always follow this when flowing through a conductor.
What is the quickest path?
This formula calculates the amount of power in a circuit by multiplying current and voltage.
Question: What is Power = current × voltage?
When resistance is constant, doubling the voltage has this effect on the current.
What is it doubles the current?
This is what a diode does to an AC current.
What is restrict it from going back the other direction? Stops oscillation?