What I Have Learned
Self-Test 2
A Directions: Choose the best answer and write the letter in your Science
Notebook
1. Which can increase the strength of an electromagnet?
A increasing the number of batteries and coils around the nail
B. increasing the number of batteries or coils around the nail
C. decreasing the number of batteries and coils around the nail
D. decreasing the number of batteries or coin around the nail
2. Which of the following materials increases the strength of an electromagnet?
A 2 m wire
B. 5 m wire
C. 1 m wire
D. 3 m wire
3. Which of the following is considered in designing your own experiment to
determine the factors that affect the strength of an electromagnet?
A. Type оf wire
B Number of coils
C. Number of batteries
D. All of the above
4. Electromagnet can be made
A brighter B. better
C. stronger
D. bolder
5. Which statement is true?
A All electromagnets are permanent magnets.
B. Increasing the number of coils in an electromagnet decreases its
strength
C. Increasing the batteries increases its strength.
D. Both A and B.
Answers
Answered by
0
Answer:
to long question
Explanation:
it takes hours to solve
Answered by
0
Answer:
i need 2 days for solving
Explanation:
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