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Name two safety measures commonly used in electric circuits and appliances.

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A rectangular coil of copper wires is rotated in a magnetic field. The direction of the induced current changes

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Which sources produce alternating current?

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Name some sources of direct current.

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State the principle of an electric generator.

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Explain different ways to induce current in a coil.

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What is the role of the split ring in an electric motor?

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What is the principle of an electric motor?

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State Fleming's left-hand rule.

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A positively-charged particle (alpha-particle) projected towards west is deflected towards north by a magnetic field.

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In Activity 13.7 (page: 230), how do we think the displacement of rod AB will be affected if (i) current in rod AB

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Which of the following property of a proton can change while it moves freely in a magnetic field?

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The magnetic field inside a long straight solenoid-carrying current (a) is zero

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The magnetic field in a given region is uniform. Draw a diagram to represent it.

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Consider a circular loop of wire lying in the plane of the table. Let the current pass through the loop clockwise

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Why don't two magnetic lines of force intersect each other?

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List the properties of magnetic lines of force.

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Draw magnetic field lines around a bar magnet.

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Why does a compass needle get deflected when brought near a bar magnet?

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