Circuits & Electromagnetic

A student builds a circuit that lights a light bulb. A second bulb is added to the same loop between the first bulb and the battery. Which statement describes the brightness of each bulb? (hint: series circuit)

• Each bulb will be as bright as the first bulb was

• The first bulb will be the same brightness, and the second bulb will be dimmer

• Each bulb will be dimmer than the first bulb was

• The first bulb will be dimmer than it was, and the second bulb will not light

The images show two steps in a procedure a student used to examine an electric circuit. Which question might the student be investigating?

• How does changing the voltage affect the brightness of a light bulb?

• How does an open circuit compare with a closed circuit?

• Is a light bulb an electric insulator or an electric conductor?

• Is more energy transformed in an electric circuit in a light bulb or in a wire?

Tags

NGSS.4-PS3-2

Which statement best describes an electric current?

• Energy transfers inside of an electric device

• Charged particles move through a conductor

• Type of conductor or insulator

• The measurement of the electric potential energy in a circuit

Adding which object to a circuit will create a potential energy difference in a circuit?

• switch

• wire

• light bulb

• battery

Tags

NGSS.MS-PS3-2

What are the 3 main components to a simple circuit?

• An energy source, conducting wire and load

• An energy source, insulation and load

• An energy source, induction pathway and load

• An energy source, conducting wire and a switch

Tags

NGSS.MS-ETS1-1

An electric (a)    is the movement of electrically charged particles.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

As the electric current through a wire increases, the magnetic field around the wire becomes stronger.

• True

• False

Tags

NGSS.HS-PS2-5

Which of the following conditions is necessary for a magnet inside a wire loop to produce an electric current? (Mechanical Energy --> Electric Energy)

• The magnet must be stationary

• The wire loop must be part of an open circuit

• The wire loop must already have a current running through it

• The magnet must be in motion

Tags

NGSS.HS-PS2-5

By changing the current in the wire, you can change the ____ of an electromagnet.

• strength and charge

• direction and coils

• charge and strength

• strength and direction

Tags

NGSS.HS-PS2-5

In the figure shown, what happens when the amount of current flowing in the wire coil is increased?

• the magnetic field becomes stronger

• the magnetic field disappears

• the position of the north and south poles is reversed

• the strength of the magnetic field decreases

Tags

NGSS.HS-PS2-5