Parallel Circuits

What is the main characteristic of a parallel circuit?

• The voltage is divided among all components.

• All components must be connected in series.

• Current can flow through multiple loops.

• There is only one loop for current to flow.

Nora is setting up a series of holiday lights for her home. Each string of lights is connected in parallel. What happens if one component in a loop of her holiday lights is faulty?

• Current will continue to flow in other loops.

• The entire circuit stops working.

• All other components will also fail.

• The voltage increases in the faulty loop.

Ava is setting up a series of lights in her backyard for a party. She connects them in a parallel circuit. How is the current distributed among the lights?

• Equally among all components.

• It flows only through the component with the highest resistance.

• It is shared between the loops.

• It is divided equally among all resistors.

In a small town, there are several houses connected to the same power supply. Each house represents a loop in a parallel circuit. What is the relationship between potential difference (V) and the houses in this parallel circuit?

• Voltage is only present in the main power line.

• Voltage decreases in each house.

• Each house has the same voltage as the power supply.

• The total voltage is shared equally among the houses.

What happens to the total resistance in a parallel circuit?

• It remains constant regardless of the components.

• It is less than the smallest resistor.

• It is equal to the sum of all resistors.

• It is greater than the smallest resistor.

In a small town, there are several houses connected to the same electrical supply in a parallel circuit. Each house has its own electrical appliances. Which of the following statements is true about current in this parallel circuit?

• Current is the same in all houses.

• The total current is the sum of currents used by each house.

• Current only flows to the house with the highest voltage.

• Current is not affected by the number of houses.

David is setting up a new lighting system in his home. He wonders, what is the effect of adding more branches to a parallel circuit for the lights?

• It has no effect on the circuit.

• It allows more current to flow.

• It decreases the total current.

• It increases the total resistance.

Hannah is setting up a new lighting system in her home, where multiple lights are connected in a parallel circuit. She wants to know how to calculate the total current flowing through the circuit. What is the formula for total current in a parallel circuit?

• Atotal = A1 / A2 /A3

• Atotal = A1 xA2 x A3

• Atotal = A1 -A2 - A3

• Atotal = A1 +A2 +A3

In a small town, there are several streetlights connected in a parallel circuit. If one streetlight goes out, what happens to the others?

• Resistance increases with more streetlights added.

• If one streetlight fails, others continue to work.

• Voltage is the same across all streetlights.

• Current is shared among streetlights.

In a science class, Ava is conducting an experiment to understand electrical circuits. She learns that different components in the circuit have different properties. One day, her teacher asks her, "What is the unit of resistance?"

• Watts (W)

• Volts (V)

• Ohms (Ω)

• Amperes (A)