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A stationary magnet does not interact with :
A stationary magnet produces a magnetic field, which can interact with magnetic materials (like iron), other magnets, and moving charges (via magnetic force). However, it does not interact with a stationary charge, as magnetic fields only exert force on moving charges, not on static ones. Answer: (DRead more
A stationary magnet produces a magnetic field, which can interact with magnetic materials (like iron), other magnets, and moving charges (via magnetic force). However, it does not interact with a stationary charge, as magnetic fields only exert force on moving charges, not on static ones.
Answer: (D) Stationary charge.
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The area of B-H loop for soft iron, as compared to that for steel is :
The area of the B-H loop represents energy loss per cycle. Soft iron has a narrow B-H loop, meaning it loses less energy and is easily magnetized and demagnetized. Steel, being a hard magnetic material, has a wider loop and higher energy loss. Therefore, the B-H loop area for soft iron is less thanRead more
The area of the B-H loop represents energy loss per cycle. Soft iron has a narrow B-H loop, meaning it loses less energy and is easily magnetized and demagnetized. Steel, being a hard magnetic material, has a wider loop and higher energy loss. Therefore, the B-H loop area for soft iron is less than that for steel.
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The permanent magnetic material is characterised by :
A permanent magnetic material retains magnetism for a long time. It is characterized by a broad hysteresis loop, which indicates high retentivity and coercivity—essential properties for maintaining strong magnetization. Such materials are hard to demagnetize, making them ideal for permanent magnets.Read more
A permanent magnetic material retains magnetism for a long time. It is characterized by a broad hysteresis loop, which indicates high retentivity and coercivity—essential properties for maintaining strong magnetization. Such materials are hard to demagnetize, making them ideal for permanent magnets.
Answer: (B) Broad hysteresis loop.
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If a diamagnetic material is placed in a magnetic field, the magnetic field inside the material compared to that outside will be
When a diamagnetic material is placed in a magnetic field, it develops an induced magnetic moment opposite to the applied field. This opposes the external field and slightly reduces the net magnetic field inside the material compared to outside. Hence, the internal field is slightly less than the exRead more
When a diamagnetic material is placed in a magnetic field, it develops an induced magnetic moment opposite to the applied field. This opposes the external field and slightly reduces the net magnetic field inside the material compared to outside. Hence, the internal field is slightly less than the external one.
Answer: (A) Slightly less.
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Which of the following statements is correct ?
The correct statement is: A tangent at a point on every magnetic field line gives the direction of the magnetic field at that point. This is a fundamental property of field lines. The other statements are incorrect: magnetic field lines do form closed loops, they don’t begin or end, and they never iRead more
The correct statement is: A tangent at a point on every magnetic field line gives the direction of the magnetic field at that point. This is a fundamental property of field lines. The other statements are incorrect: magnetic field lines do form closed loops, they don’t begin or end, and they never intersect.
Answer: (D) Tangent at a point on every field line gives the direction of magnetic field at that point.
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