Circuit Basics
This is the flow of electric charge through a material or circuit
What is electric current
A material allows electric charge to move through it easily is called this.
What is a conductor?
This component provides electricity energy to a simple circuit
What is a battery or power source?
The region/area around a magnet where magnetic forces can be detected is called this.
What is a magnetic field?
This instrument can detect small electrical currents by shaking a deflection when current passes through it.
What is a galvanometer?
In a typical metal wire, these negatively charged particles move through the conductor and make up the electric current
What are electrons?
Plastic, Rubber, and glass are commonly placed in this category because they resist the movement of electric charge.
What are insulators?
This component can open or close an electrical pathway, controlling whether current flows.
What is a switch?
A magnet has two of these opposite ends, commonly called north and south.
What are magnetic poles or magnetic dipoles?
Wrapping insulated wire into many loops increases the interaction between the wire and a changing magnetic field. This structure is called a what?
What is a coil?
A battery, wires, and a light bulb are connected in a complete pathway, allowing current to flow. This describes this type of circuit.
What is a closed circuit?
A metal paper clip and a rubber eraser are placed between two testing points in a conductivity activity. The paper clip completed the circuit but the eraser doesn’t. What does this show?
What is the paper clip is a conductor and the rubber eraser is an insulator?
A student connects a battery, wires, and a bulb, but the bulb does not light. The student discovered that one wire is not touching the battery. What is the most issue?
What is a broken electrical pathway creating an open circuit?
What is magnetic flux?
A magnet is moved toward a coil connected to a galvanometer, and the needle moves. What does this observation indicate?
What is an induced current is being produced in the coil?
A circuit contains a battery,wires, and a light bulb, but there is a break in one of the wires. Predict what will happen to the bulb and explain why
What is the bulb will not light because the electrical pathway is broken, creating an open circuit?
A material allows only a small amount of current to pass through it compared with a highly conductive material. How would you describe its conductivity.
What is low conductivity?
A switch is closed, the battery is charged, and the bulb still does not light. The student replaces a damaged wire and the bulb turns on. What was the problem?
What is a faulty wire prevented a complete electrical pathway?
When the magnetic field through a coil changes, this electrical effect can occur, producing a voltage that may cause current to flow.
What is electromagnetic induction?
A wire has many electrons, but they are not moving through the wire in an organized way. Would this alone mean there is an electric current? Explain.
What is no, because electric current requires the movement of electric charge in an organized direction?
A student says,” The battery creates electrons that travel through the wires.” based on the behavior of a circuit, what is incorrect about this statement?
What is the battery provides energy that drives existing charges through the circuit rather than creating the electrons that flow through the wires?
During a conductivity investigation, a material does not make the testing device respond. Before concluding that the material is an insulator, what should you check first?
What is whether the circuit, connections, and testing points are working properly?
A student tests a circuit and gets no response. They replace the battery, but nothing changes. They then discover that an insulator was placed between the testing points. Explain why replacing the battery did not solve the problem.
What is the insulator was blocking the path for current, so the circuit could not be completed even with a working battery?
A magnet is moved through a coil of wire. Predict what happens and identify the process responsible for the electrical effect.
What is an induced current is produced because the changing magnetic flux through the coil causes electromagnetic induction?
Two circuits use the same type of wire. Circuit A has more charge passing through a point each second than circuit B. Which circuit has the greater current and why?
What is circuit A, because electric current describes how much electric charge passes a point over a given amount of time?