Kirchhoff's Rules and Circuits

Cut the wire in the space shown. How many bulbs stay lit?

• 1

• 2

• 3

• 0

When the lights are on, electricity travels in ....

• Parallel circuit

• Incomplete path

• Complete path

• i like tortles

Tags

NGSS.MS-PS2-3

The electric current in a closed circuit always flows from the ____ terminal of the electric cell to the _____ terminal.

• Negative to positive

• Positive to negative

• Positive to positive

• None of these

_____ is an electric device which easily closes or opens an electric circuit.

• Filament

• Electric bulb

• Electric switch

• Electric cell

An ___________ is a simple device that is used to open or close an electric circuit.

• electric switch

• electric remote

• electric handle

Two or more cells connected end to end together forms a ______.

• torch

• circuit

• battery

The diagram shows an electric circuit with four bells that a student plans to build. When the student connects the wires as shown, which of the bells will ring?

• Bell 1 Only

• Bells 1 and 4

• Bells 3 and 4

• Bells 1, 2, 3, and 4

In some circuits that are used for decorating, one burned-out lightbulb will prevent all the other lightbulbs from lighting. In other circuits, one burned-out lightbulb will have no effect on the other lightbulbs.

In which of these circuits will the other lightbulbs still light even if one bulb is burned out?

• A

• B

• C

• D

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

The diagram shows a series circuit with three lit bulbs. How many of the bulbs will remain lit if the wire is cut at the point shown by the arrow?

• 0

• 1

• 2

• 3

Which of the following is a statement of Kirchhoff's Voltage Law (KVL)?

• The total current entering a junction equals the total current leaving the junction.

• The sum of the electromotive forces and potential differences in any closed loop is zero.

• The total resistance in a series circuit is the sum of the individual resistances.

• The power dissipated in a circuit is the product of current and voltage.