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12th Uttar Pradesh Board
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According to Coulomb's law, which is the correct relation for the following figure?

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Important Questions on Sample Paper 1

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12th Uttar Pradesh Board
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 2
The electric potential on the axis of an electric dipole at a distance 'r' from its centre is V. Then the potential at a point at the same distance on its equatorial line will be
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 3

The temperature T dependence of resistivity of material A and material B is represented by fig (i) and fig (ii) respectively. Identify material A and material B.

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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 4
Two concentric and coplanar circular loops P and Q have their radii in the ratio 2:3. Loop Q carries a current 9 A in the anticlockwise direction. For the magnetic field to be zero at the common centre, loop P must carry
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12th Uttar Pradesh Board
IMPORTANT
Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 5
A long straight wire of circular cross section of radius a carries a steady current I. The current is uniformly distributed across its cross-section. The ratio of the magnitudes of magnetic field at a point distant a/2 above the surface of wire to that at a point distant a/2 below its surface is
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 6
If the magnetising field on a ferromagnetic material is increased, its permeability
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 7

An iron cored coil is connected in series with an electric bulb with an AC source as shown in the figure. When iron piece is taken out of the coil, the brightness of the bulb will

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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 8
Which of the following statement is NOT true about the properties of electromagnetic waves?
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12th Uttar Pradesh Board
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Physics Crash Course (Based on Revised Syllabus-2023)>Chapter 15 - Sample Paper 1>Exercise>Q 9
A rectangular, a square, a circular and an elliptical loop, all in the (x-y) plane, are moving out of a uniform magnetic field with a constant velocityv→= vi^ .The magnetic field is directed along the negative z-axis direction. The induced emf, during the passage of these loops, out of the field region, will not remain constant for