Circuits, electricity, and magnetism

What type of circuit allows some lights to turn off while others remain lit?

• Series circuits

• Parallel circuits

• Open circuits

• Short circuits

What is Ohm's Law?

• Ohm's Law states that the current through a conductor is inversely proportional to the voltage across it.

• Ohm's Law states that the current through a conductor between two points is directly proportional to the voltage across the two points.

• Ohm's Law states that the resistance of a conductor is equal to the voltage divided by the current.

• Ohm's Law states that the power in a circuit is equal to the product of current and resistance.

What is the unit of resistance?

• Volt (V)

• Ampere (A)

• Ohm (Ω)

• Watt (W)

What is a parallel circuit?

• A circuit where components are connected in a single path, allowing only one route for current.

• A circuit in which components are connected across common points or junctions, allowing multiple paths for current.

• A circuit that only allows current to flow in one direction.

• A circuit that has no closed loop, preventing current from flowing.

How are electric and magnetic forces related?

• Both the electric and magnetic forces are caused by the motion of charged particles such as electrons.

• Electric forces are only present in static charges, while magnetic forces are only present in moving charges.

• Electric forces can exist without magnetic forces, but magnetic forces cannot exist without electric forces.

• Electric and magnetic forces are unrelated and act independently of each other.

What is the difference between static electricity and current electricity?

• Static electricity is the flow of electric charge through a conductor, while current electricity is the buildup of electric charge on the surface of objects.

• Static electricity is the buildup of electric charge on the surface of objects, while current electricity is the flow of electric charge through a conductor.

• Static electricity occurs only in gases, while current electricity occurs in liquids and solids.

• Static electricity can be used to power devices, while current electricity cannot.

Why does current flowing through a wire create a magnetic field?

• Because magnetic force is another aspect of electrical force.

• Because the wire generates heat that creates a magnetic field.

• Because the electrons in the wire are moving randomly.

• Because the wire is made of a magnetic material.

What is the unit of electric current?

• Volt (V)

• Ohm (Ω)

• Ampere (A)

• Watt (W)

What is a conductor?

• A material that allows the flow of electric current, such as metals like copper and aluminum.

• A type of insulator that prevents electric current from flowing.

• A device that stores electric charge for later use.

• A material that only conducts heat but not electricity.

What is the role of electrons in electricity?

• Electrons are neutral particles that do not contribute to electric current.

• Electrons are charged particles that flow through a conductor to create electric current.

• Electrons are particles that only exist in insulators and do not conduct electricity.

• Electrons are particles that store energy but do not participate in electric current.