WorksheetsCircuits & Electromagnetic
Total questions: 14
Worksheet time: 9mins
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?
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
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
An electric (a) is the movement of electrically charged particles.
As the electric current through a wire increases, the magnetic field around the wire becomes stronger.
True
False
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
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
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
What are the ways to increase the strength of the electromagnet? (select all that apply)
Increasing the current
Increasing the voltage
Decreasing the distance
Increasing the number of coils
Increasing the distance
A(n) (a) is a temporary magnet made with a current-carrying wire coil wrapped around a magnetic core.
(a) is the interaction between charges and magnets.
Would you rather build: Sumo-wrestling junkbots OR racing junkbots?
Sumo-wrestling
Racing
