Electric Circuits Review

What happens to the brightness of bulbs in a series circuit when more bulbs are added?

• The brightness of bulbs increases as more bulbs are added.

• The brightness of bulbs remains the same regardless of the number of bulbs.

• The brightness of bulbs decreases as more bulbs are added because the total resistance increases, reducing the current.

• The brightness of bulbs fluctuates randomly when more bulbs are added.

What is a parallel circuit?

• A circuit where components are connected in a single path, allowing current to flow in one direction.

• A circuit where components are connected across common points or junctions, allowing multiple paths for current to flow.

• A circuit that only allows current to flow through one component at a time.

• A circuit that has no junctions and only one path for current to flow.

In a series circuit, how does the current behave?

• The current is the same through all components, and if one component fails, the entire circuit is interrupted.

• The current varies between components, depending on their resistance.

• The current is highest at the beginning of the circuit and decreases towards the end.

• The current flows only through the component with the least resistance.

What is the function of a resistor in a circuit?

• To amplify the electric current in a circuit.

• To limit the flow of electric current in a circuit, providing resistance to the current flow.

• To store electric energy for later use.

• To convert electric energy into light.

What is the function of a battery in a circuit?

• A battery stores electrical energy for later use.

• A battery provides the electrical energy needed to drive the current through the circuit.

• A battery acts as a resistor to limit current flow.

• A battery converts electrical energy into mechanical energy.

What effect does removing a wire have in a circuit?

• It increases the flow of current.

• It can break the circuit, stopping the flow of current and causing connected devices (like bulbs) to turn off.

• It has no effect on the circuit.

• It allows more devices to be connected in parallel.

What is the significance of the term 'load' in an electric circuit?

• The load refers to any component in a circuit that consumes electrical energy, such as light bulbs, motors, or resistors.

• The load is the total voltage supplied by the power source in the circuit.

• The load indicates the maximum current that can flow through the circuit without damage.

• The load is the resistance offered by the circuit to the flow of current.

What is a complete circuit?

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

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

• A circuit that has a break in it, preventing current from flowing.

• A configuration that only connects to a power source without any load.

What happens to the current in a parallel circuit if one branch is disconnected?

• The current stops flowing completely.

• The current can still flow through the other branches, so the remaining bulbs will stay lit.

• The current increases in the disconnected branch.

• The current decreases in all branches.

What are the two main types of circuits?

• Series circuits and parallel circuits

• Open circuits and closed circuits

• Direct circuits and alternating circuits

• Complex circuits and simple circuits