Circuits Review

What is a complete circuit?

• A closed loop that allows electric current to flow from the power source, through the components, and back to the power source.

• An open loop that prevents electric current from flowing.

• A circuit that only works with batteries and not with other power sources.

• A series of components that do not allow current to flow.

How do you connect two batteries in series?

• Connecting both positive ends together

• Turning one battery so that its positive end connects to the other battery's negative end.

• Connecting both negative ends together

• Using a wire to connect the positive end of one battery to the positive end of another battery.

What happens if a lightbulb is not part of a circuit?

• The lightbulb will light up dimly.

• The lightbulb will not light up.

• The lightbulb will explode.

• The lightbulb will flicker intermittently.

What is the function of a resistor in a circuit?

• A resistor amplifies the electric current in a circuit.

• A resistor limits the flow of electric current in a circuit.

• A resistor stores electric energy in a circuit.

• A resistor converts electric current into heat.

What is the difference between series and parallel circuits?

• In a series circuit, components are connected end-to-end, allowing multiple paths for current.

• In a parallel circuit, components are connected end-to-end, so the same current flows through all components.

• In a series circuit, components are connected end-to-end, so the same current flows through all components. In a parallel circuit, components are connected across common points, allowing multiple paths for current.

• In a parallel circuit, components are connected across common points, preventing current from flowing through all components.

What happens to the total resistance in a series circuit when more resistors are added?

• The total resistance decreases as more resistors are added in series.

• The total resistance remains the same regardless of the number of resistors.

• The total resistance increases as more resistors are added in series.

• The total resistance fluctuates with the addition of resistors.

What is required for a battery to function in a circuit?

• The battery needs to form a complete circuit that starts with one metal post and ends with the other metal post.

• The battery must be connected to a power outlet.

• The battery should be charged to at least 50%.

• The battery needs to be of a specific brand to work.

What is one form of energy that can be produced in a circuit?

• Light

• Sound

• Heat

• Magnetism

What is the role of a switch in a circuit?

• A switch amplifies the current in a circuit.

• A switch controls the flow of current in a circuit by opening (stopping current) or closing (allowing current) the circuit.

• A switch converts AC to DC current in a circuit.

• A switch stores electrical energy in a circuit.