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Questions and Answers
What is the result of the expression $2 + (16-17) - 4 + 3$?
What is the result of the expression $2 + (16-17) - 4 + 3$?
0
What is the variable name in the given text?
What is the variable name in the given text?
Aladi
What is the revision number mentioned in the text?
What is the revision number mentioned in the text?
1
How many digits are in the number mentioned in the text as '1111'?
How many digits are in the number mentioned in the text as '1111'?
Write the number '5' in words.
Write the number '5' in words.
Explain how the strength of an electromagnet can be increased according to the text.
Explain how the strength of an electromagnet can be increased according to the text.
Describe how the polarity of an electromagnet can be changed.
Describe how the polarity of an electromagnet can be changed.
What is the difference between an electromagnet and a permanent magnet when it comes to working without electric current?
What is the difference between an electromagnet and a permanent magnet when it comes to working without electric current?
Define magnetic induction as explained in the text.
Define magnetic induction as explained in the text.
What are induced magnetic poles in the context of iron or steel near a strong magnet?
What are induced magnetic poles in the context of iron or steel near a strong magnet?
Explain why two common pins attached to the pole of a bar magnet diverge outward and converge inward when attached to each end of a horse-shoe magnet.
Explain why two common pins attached to the pole of a bar magnet diverge outward and converge inward when attached to each end of a horse-shoe magnet.
