Understanding Electric Circuits

What is the main difference between series and parallel circuits?

• In series circuits, components share the same current; in parallel circuits, components share the same voltage.

• In series circuits, the total resistance is lower; in parallel circuits, the total resistance is higher.

• In series circuits, components share the same voltage; in parallel circuits, components share the same current.

• In series circuits, components operate independently; in parallel circuits, components are connected sequentially.

In a series circuit, how does the total resistance compare to individual resistances?

• The total resistance is the same as the largest individual resistance.

• The total resistance is less than the smallest individual resistance.

• The total resistance is greater than the individual resistances.

• The total resistance is equal to the sum of individual resistances.

What happens to the total current in a parallel circuit when more branches are added?

• The total current remains the same.

• The total current fluctuates randomly.

• The total current increases.

• The total current decreases.

Name three common components found in electric circuits.

• Generator, insulator, relay

• Transformer, resistor, capacitor

• Power source, conductor, load

• Battery, switch, diode

What is the function of a resistor in a circuit?

• To increase current flow in a circuit.

• To store electrical energy for later use.

• To convert electrical energy into heat.

• To limit current and control voltage in a circuit.

How does voltage behave in a series circuit compared to a parallel circuit?

• In a series circuit, voltage can be increased by adding more components without affecting the total.

• In a series circuit, voltage is divided among components; in a parallel circuit, voltage is the same across all components.

• Voltage is always higher in a series circuit than in a parallel circuit.

• In a series circuit, voltage remains constant across all components; in a parallel circuit, it is divided.

What is the role of a capacitor in an electric circuit?

• A capacitor converts AC to DC voltage.

• A capacitor stores and releases electrical energy, stabilizes voltage, and filters signals in an electric circuit.

• A capacitor generates electrical energy for the circuit.

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

In a parallel circuit, how is the total resistance calculated?

• R_total = R1 + R2 + R3 + ... + Rn

• 1/R_total = 1/R1 + 1/R2 + 1/R3 + ... + 1/Rn

• R_total = R1 - R2 - R3 - ... - Rn

• R_total = R1 * R2 * R3 * ... * Rn

What is the effect of a broken component in a series circuit?

• Only the broken component stops working.

• A broken component in a series circuit causes the entire circuit to stop working.

• The circuit continues to function normally.

• The circuit becomes more efficient.

Describe how a switch functions in an electric circuit.

• A switch generates electricity by converting mechanical energy into electrical energy.

• A switch acts as a resistor, limiting the flow of current in a circuit.

• A switch controls the flow of electric current in a circuit by opening or closing the circuit.

• A switch increases the voltage in a circuit by amplifying the current.