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Class 12 · Physics
→At a point, the electric field is 2000 newton per coulomb eastward. What is the force on a 3 microcoulomb negative charge placed there?
Class 12 · Physics
→A negative charge is placed where the electric field is northward. If the charge magnitude is doubled, what happens to the force?
Class 12 · Physics
→A positive test charge experiences zero force at a point. Is it correct to say that there are no source charges around?
Class 12 · Physics
→In a region, field lines are equally spaced but gradually curved. What conclusion follows?
Class 12 · Physics
→If the magnitude of electric field is the same in a region but its direction changes with position, is the field uniform?
Class 12 · Physics
→Why can a net force act on an electric dipole in a non-uniform electric field?
Class 12 · Physics
→An electric dipole is placed perpendicular to a uniform electric field. How is its torque compared to other orientations?
Class 12 · Physics
→An electric dipole is placed parallel to a uniform electric field. What is the torque on it?
Class 12 · Physics
→For two equal and opposite charges, what is the field direction at a far point on the perpendicular bisector?
Class 12 · Physics
→For two equal positive charges, at a very far point on the perpendicular bisector, what is the approximate direction of the combined field?
Class 12 · Physics
→In a field-line diagram, a line crosses itself and forms a closed shape. Why is this unacceptable for an electrostatic field?
Class 12 · Physics
→The density of electric field lines indicates field magnitude. What is the most correct limitation of this statement?
Class 12 · Physics
→The field is found by measuring force on a small positive test charge. If the test charge is large enough to move the source charges, what is the main error?
Class 12 · Physics
→If two equal electric fields in opposite directions give zero resultant, what happens if the direction of one is slightly turned?
Class 12 · Physics
→If two electric field vectors have equal magnitude and the angle between them is sixty degrees, the resultant field will be greater than which value?
Class 12 · Physics
→At a point, fields of 5 newton per coulomb eastward and 12 newton per coulomb northward act. What is the magnitude of the resultant field?
Class 12 · Physics
→At the midpoint of two equal opposite charges, potential may be zero but why is electric field not zero?
Class 12 · Physics
→At a point, electric field is zero but potential is not zero. In which example is this possible?
Class 12 · Physics
→The electric field is zero inside a conductor but not necessarily zero outside it. What best explains this?
Class 12 · Physics
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