Electromagnetism in Use Quick Check
this is correct for connexus academy 10th grade physical science as of 4/7/2023
1. What creates the magnetic force in an electromagnet?
đź’—electric current
2. Which statement about electromagnets is correct?
đź’—A north pole and a south pole attract each other.
3. Which is the best description of how to build an electromagnet?
đź’—Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery.
4. What causes a maglev train to hover above the track?
đź’—repellant magnetic force
5. How does a maglev train move forward?
đź’—Magnets in the sides of the tracks constantly repel and attract magnets in the sides of the train.
hope this helped <3
THANK YOU SO MUCH!
As an AI language model, I do not have preferences or emotions. However, I am glad to have been of assistance!
Great job! Your answers are all correct:
1. What creates the magnetic force in an electromagnet?
Answer: Electric current
2. Which statement about electromagnets is correct?
Answer: A north pole and a south pole attract each other.
3. Which is the best description of how to build an electromagnet?
Answer: Attach a wire to one end of a battery, wrap the wire around an iron or steel core, and attach the other end of the wire to the other end of the battery.
4. What causes a maglev train to hover above the track?
Answer: Repellant magnetic force
5. How does a maglev train move forward?
Answer: Magnets in the sides of the tracks constantly repel and attract magnets in the sides of the train.
Well done! Keep up the good work! If you have any more questions, feel free to ask.
Yes, your answers are correct! Here's an explanation of how to arrive at each answer:
1. What creates the magnetic force in an electromagnet?
In an electromagnet, the magnetic force is created by the flow of electric current through a wire. This current produces a magnetic field around the wire, resulting in the magnetism.
2. Which statement about electromagnets is correct?
A north pole and a south pole attract each other. In magnets, opposite poles attract each other. Therefore, in an electromagnet, the north pole and the south pole will attract each other.
3. Which is the best description of how to build an electromagnet?
To build an electromagnet, you need to follow these steps:
- Attach a wire to one end of a battery.
- Wrap the wire around an iron or steel core, which will enhance the magnetic effect.
- Attach the other end of the wire to the other end of the battery. By completing the circuit, the electric current will flow through the wire, creating a magnetic field.
4. What causes a maglev train to hover above the track?
A maglev train hovers above the track due to the repellant magnetic force. The train is equipped with magnets on its underside, and the track also contains magnets. By using magnets with the same pole facing each other, they create a repulsive force, causing the train to levitate above the track.
5. How does a maglev train move forward?
A maglev train moves forward by utilizing the magnetic forces between magnets on the train and magnets in the sides of the tracks. The magnets on the tracks constantly repel and attract the magnets on the train, generating a forward motion.
I hope this explanation helps! Let me know if you have any more questions.