194 questions in Magnetism & Electromagnetism - HI MCQ!

A conductor of length L has current I passing through it, when it is placed parallel to a magnetic field. The force experienced by the conductor will be?

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Core of an electromagnet should have?

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A certain amount of current flows through a ring-shaped coil with fixed number of turns. How does the magnetic induction B varies inside the coil if an iron core is threaded into coil without dimensional change of coil?

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Magnetic moment is a?

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The two conductors of a transmission line carry equal current I in opposite directions. The force on each conductor is?

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When an iron piece is placed in a magnetic field?

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The electromagnet has 50 turns and a current of 1 A flows through the coil. If the length of the magnet circuit is 200 mm, what is the magnetic field strength?

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Which of the following is the unit of magnetic flux density?

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Out of the following statements, concerning an electric field, which statement is not true?

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A magnetic field exists around?

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