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Assertion: Five charges `+q` each are placed at Five vertices of a regular pentagon. A sixth charge `-Q`, is placed at the centre of pentagon, then net electrostatic force on `-Q`, is zero. Reason: Net electrostatic potential at the centre is

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Electric field is always normal to equipotential surfaces and along the direction of decreasing order of potential. Reason: Negative gradient of electric potential is electric

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: No work is done in moving a charge along equatorial line. Reason: The electric potential is everywhere zero on the equatorial line of a

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: The expression of potential energy `U=1/(4piepsilon_0)(q_1q_2)/(r_(12))` is unaltered whatever way the charges are brought to the specified locations. Reason: Path-independence of work for electrostatic

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: When two positive point charges move away from each other, then their electrostatic potential energy decreases. Reason: Change in potential energy between two points is equal to the work done by electrostatic

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Conductor having equal positive charge and volume, must also have same potential. Reason: Potential depends only on charge and volume of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: In the absence of an external electric Field, the dipole moment per unit volume of a polar dielectric is zero. Reason: The dipoles of a polar dielectric are randomly

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Polar molecules do not have permanent dipole moment. Reason: In polar molecules, the centre of positive and negative charges coincides even when there is no external

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: A capacitor can be given only a limited quantity of charge. Reason: Charge stored by a capacitor depends on the shape and size of the plates of capacitor and the surrounding

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: Capacity of a parallel plate capacitor increases when distance between the plates is increased. Reason: Capacitance of a capacitor is directly proportional to distance between

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: If the distance between parallel plates of a capacitor is halved and dielectric constant is made three times, then the capacitance becomes 6 times. Reason: Capacity of the capacitor depends upon the nature of the material between the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: A charged capacitor is disconnected from a battery. Now, if its plate are separated, further the potential energy will fall. Reason: Energy stored in a capacitor is not equal to the work done in charging

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Assertion: When a capacitor is charged by a battery, half of the energy supplied by the battery is stored in the capacitor and rest half is lost. Reason: If resistance in the circuit is zero, then there will be no loss of

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Equipotential SurfaceIn physics, the region in space where every point in it is at the same potential, is called equipotential or isopotential. An equipotential region of a scalar potential in three-dimensional space is often an equipotential surface, but it can also be a three-dimensional region in space. The gradient of the scalar potential is everywhere perpendicular to the equipotential surface, and zero inside a three-dimensional equipotential region. In case of electrical conductors, if a and b are any two points within or at the surface of a given conductor, and given there is no flow of charge being exchanged between

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Equipotential SurfaceIn physics, the region in space where every point in it is at the same potential, is called equipotential or isopotential. An equipotential region of a scalar potential in three-dimensional space is often an equipotential surface, but it can also be a three-dimensional region in space. The gradient of the scalar potential is everywhere perpendicular to the equipotential surface, and zero inside a three-dimensional equipotential region. In case of electrical conductors, if a and b are any two points within or at the surface of a given conductor, and given there is no flow of charge being exchanged between

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Equipotential SurfaceIn physics, the region in space where every point in it is at the same potential, is called equipotential or isopotential. An equipotential region of a scalar potential in three-dimensional space is often an equipotential surface, but it can also be a three-dimensional region in space. The gradient of the scalar potential is everywhere perpendicular to the equipotential surface, and zero inside a three-dimensional equipotential region. In case of electrical conductors, if a and b are any two points within or at the surface of a given conductor, and given there is no flow of charge being exchanged between

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Equipotential SurfaceIn physics, the region in space where every point in it is at the same potential, is called equipotential or isopotential. An equipotential region of a scalar potential in three-dimensional space is often an equipotential surface, but it can also be a three-dimensional region in space. The gradient of the scalar potential is everywhere perpendicular to the equipotential surface, and zero inside a three-dimensional equipotential region. In case of electrical conductors, if a and b are any two points within or at the surface of a given conductor, and given there is no flow of charge being exchanged between

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Electrostatic Potential Energy Electrostatic potential energy of a system of point charges is defined as the total amount of work done in bringing the different charges to their respective positions from infinitely large mutual separations.By definition, work done in carrying charge from `oo` to any point is W = Potential `xx` ChargeThis work is stored in the system of two point charges in the form of electrostatic potential energy U of the system.Work done in moving a charge from one point to other inside a uniformly charged conducting sphere

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Electrostatic Potential Energy Electrostatic potential energy of a system of point charges is defined as the total amount of work done in bringing the different charges to their respective positions from infinitely large mutual separations.By definition, work done in carrying charge from `oo` to any point is W = Potential `xx` ChargeThis work is stored in the system of two point charges in the form of electrostatic potential energy U of the system.A positively charged particle is released from rest in an uniform electric field. The electric potential energy of the

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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Electrostatic Potential Energy Electrostatic potential energy of a system of point charges is defined as the total amount of work done in bringing the different charges to their respective positions from infinitely large mutual separations.By definition, work done in carrying charge from `oo` to any point is W = Potential `xx` ChargeThis work is stored in the system of two point charges in the form of electrostatic potential energy U of the system.Three charges are placed at the vertex of an equilateral triangle of side `l` as shown in figure. For what value of `Q` the electrostatic potential energy

asked Mar 20, 2022 in 12th Physics by varun (6.7k points)

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