The diagram shows three light bulbs connected in a parallel circuit with an open switch. Which light bulb will be turned off by the opened switch?

• Light bulb 1

• Light bulb 2

• Both light bulbs 2 and 3

• Both light bulbs 1 and 2

Carlos built a simple circuit with two resistors (R₁, R₂) and a switch (S). He opened the switch S and current flowed through resistor R₁ but not through resistor R₂. Which circuit did Carlos most likely build?

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The picture shows a circuit. What would happen if the light bulb in the middle were removed?

• The first and third bulb would not light up.

• The first and third bulb would both light up.

• The first bulb would not light, but the third bulb would light.

• The first bulb would light, but the third bulb would not light.

Which of the following is a correct comparison of a series circuit and a parallel circuit?

• A series circuit and a parallel circuit both require a power source and a closed circuit, and both convert electrical energy to light, heat, or sound.

• A series circuit and a parallel circuit both require a power source and an open circuit, and both convert electrical energy to light, heat, or sound.

• A series circuit requires a power source, a closed circuit, and converts electrical energy to light, heat, or sound. A parallel circuit requires a power source, an open circuit, and converts electrical energy to light, heat, or sound.

• A series circuit requires a power source, an open circuit, and converts electrical energy to light, heat, or sound. A parallel circuit requires a power source, a closed circuit, and converts electrical energy to light, heat, or sound.

The diagram shows a circuit with a battery, three light bulbs, and a switch. What will a student most likely observe if the switch is closed?

• Light bulbs 1, 2, and 3 will all turn on.

• Light bulb 3 will turn on, but Light bulbs 1 and 2 will turn off.

• Light bulbs 1, 2, and 3 will all turn off.

• Light bulbs 1 and 2 will turn on, but Light bulb 3 will turn off.

The diagram shows a simple circuit. What will happen if Bulb 1 burns out?

• Bulb 2 will go out because it is connected in series to Bulb 1.

• Bulb 2 will go out because it is connected in parallel to Bulb 1.

• Bulb 2 will remain lit because it is connected in series to Bulb 1.

• Bulb 2 will remain lit because it is connected in parallel to Bulb 1.

Which statement correctly describes each circuit?

• The bulbs in Circuit 1 are connected in series, and the bulbs in Circuit 2 are connected in parallel.

• The bulbs in Circuit 1 are connected in parallel, and the bulbs in Circuit 2 are connected in series.

• The bulbs in both circuits are connected in series.

• The bulbs in both circuits are connected in parallel.

The data table shows the resistivity of various materials used for wire. Which statement correctly compares the current flow for the materials?

• Copper allows a higher current flow than silver.

• Aluminum allows a higher current flow than silver.

• Tungsten allows a higher current flow than copper.

• Copper allows a higher current flow than aluminum.

Tags

NGSS.MS-PS2-3

The image shows an electrical circuit. What TWO statements describe the changes in the circuit’s performance if a thicker wire is used? Pick up to 5 answers.

• The resistance of the wire decreases.

• The current through the wire increases.

• The current through the wire decreases.

• The resistance of the wire remains the same.

• The current through the wire remains the same.

What effects do impurities in a wire have on its resistance and current flow?

• Impurities in the wire decrease the resistance and increase the current flow.

• Impurities in the wire increase the resistance and decrease the current flow.

• Impurities in the wire cause the resistance to remain the same while increasing the current flow.

• Impurities in the wire cause the resistance to increase while the current flow remains the same.

Tags

NGSS.HS-PS3-5