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PHYSICS MCQ

Magnetism · ICSE STD 9 (ICSE - English Medium). 4 questions.

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4 questions · timed · auto-graded

MCQ 11 Mark
The strength of the electromagnet can be increased by
  • A
    reversing the directions of current
  • B
    using alternating current of high frequency
  • ✓
    increasing the current in the coil
  • D
    decreasing the number of turns of coil
Answer
Correct option: C.
increasing the current in the coil
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MCQ 31 Mark
In a uniform magnetic field, the field lines are:
  • A
    Curved
  • ✓
    Parallel equidistant straight lines
  • C
    Parallel but non-equispaced straight lines
  • D
    Nothing can be said.
Answer
Correct option: B.
Parallel equidistant straight lines
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MCQ 41 Mark
Two like magnetic poles:
  • ✓
    Repel each other
  • B
    Attract each other
  • C
    First attract each other, then repel
  • D
    Neither nor repel.
Answer
Correct option: A.
Repel each other
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MCQ - PHYSICS STD 9 Questions - Vidyadip