PhysicsHardHigh School (11–12)Electricity & Magnetism › ElectrostaticsNEETAEEE (Amrita)AMUEEEAP EAPCETBCECECMI Entrance
Created by StemPy LabFive statements about electric charge are given below. Take . (i) A body can carry of charge. (ii) A charged rod attracts paper pieces because they gain a net opposite charge. (iii) In a medium of dielectric constant , the force between charges is times that in vacuum. (iv) The force between two point charges, found from Coulomb's law, is not changed by bringing a third charge near them. (v) Two neutral bodies rubbed together acquire equal and opposite charges. How many of the statements above are correct?
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← Assertion (A): At the same distance from the centre of a short electric dipole, the field on the axis is twice the field on the equatorial line, and the two fields point in opposite directions.
Reason (R): On the equatorial line, the components of the fields of the two charges along the line from the dipole centre to the point cancel, and the net field is parallel to the dipole moment.A teacher cuts a spherical cavity inside a solid metal sphere that stands alone, far from other bodies, and carries no net charge. She then hangs a point charge +q inside the cavity, away from its centre, on an insulating thread, so that it touches nothing. After the charges in the metal have settled, which statement is correct? →
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