Sps10b Sps10c

In an electrical circuit, if the current is 0.5 A and the voltage is 6 V, what is the resistance?

• 0.083 ohms

• 12 ohms

• 3 ohms

• 6.5 ohms

A balloon is rubbed all over with wool.  The balloon will now attract wool because the balloon and wool

• are magnets
• have opposite charges
• have like charges
• have neutral charges

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Which of the following could be used as the core of a simple electromagnet?

• drinking straw
• iron nail 
• a soda bottle
• an ink pen

Tags

NGSS.MS-PS2-3

When two magnets attract, they ______________

• push apart
• change color
• get colder
• pull together

Tags

NGSS.3-PS2-3

NGSS.3-PS2-4

• Series circuit - Bulbs are lit
• Series circuit - Bulbs are off
• Parallel circuit - Bulbs are lit
• Parallel circuit - Bulbs are off

What is voltage?

• a measure of electric current
• a kind of static elecricity
• a kind of current electricity
• a measure of potential energy difference

What is the purpose of a switch in an electric circuit?

• to allow the circuit to be opened or closed
• to change the direction of the current
• to provide a push for the current
• to increase the electric power to the load

Which of these in an insulator?

• a copper wire
• a silver spoon
• a plastic coating on a wire
• an aluminum coating on a wire

Tags

NGSS.MS-PS2-3

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Remove all the coils and the nail.

• Use a smaller battery.

• Reverse the poles of the magnet.

• Add more coils of wire to the nail.

This is an example of a ______ circuit

• Series
• Parallel
• Open
• Dihexihedral