Consider the following statements:
- In electric bells and loudspeaker, electromagnets are used.
- If a man moves constantly in the direction towards which his magnetic needle points, he would reach at South Pole.
Which of the given statements is/are correct?
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Only (1)
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Only (2)
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Both (1) & (2)
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Neither (1) nor (2)
A
Correct answer
Explanation
Statement (1) is correct. Electromagnets are like normal magnets. The electromagnet's strength can be increased or decreased by changing the amount of electric current that flows through the magnet. Therefore, they are used in manufacturing of electric bells and loudspeakers.
Statement (2) is wrong. If a man moves constantly in the direction towards which his magnetic needle points, he would reach North Pole as a freely suspended needle always points in the north direction.