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Class 12 · Physics
→If electric field lines intersect in a diagram, what is the deepest physical error?
Class 12 · Physics
→In a region electric field lines are equally spaced but curved like circular arcs. Why is this not suitable for a perfectly uniform field?
Class 12 · Physics
→Two equal electric fields are in opposite directions. If the direction of one is slightly rotated, which statement about the resultant field is correct?
Class 12 · Physics
→Two electric fields have equal magnitudes and the angle between them is 120 degrees. What will be the magnitude of the resultant field?
Class 12 · Physics
→If the distance from a point charge is tripled and the source charge is made nine times, what happens to the electric field?
Class 12 · Physics
→If the distance from a point charge is halved and the source charge is made three times, what happens to the electric field?
Class 12 · Physics
→A positive charge and a negative charge four times larger in magnitude are placed on a line. Where can the zero electric field point be found?
Class 12 · Physics
→Why can the net electric field not be zero at the exact midpoint between two unequal unlike charges?
Class 12 · Physics
→Between two unequal positive charges, the point where net electric field is zero is generally closer to which charge?
Class 12 · Physics
→In a field-line diagram, no line is drawn in a certain region. Does this always prove that the electric field there is zero?
Class 12 · Physics
→If a small positive test charge is placed at the midpoint between two equal negative charges, what is the net electric force on it?
Class 12 · Physics
→The net field at a point is zero, but at nearby points the field is not zero. What should be understood from this?
Class 12 · Physics
→Why do electric field lines not form closed curves in an electrostatic field?
Class 12 · Physics
→If field lines in a region are parallel but their arrows are shown in opposite directions, why is the diagram incorrect?
Class 12 · Physics
→In a uniform field, the force on a positive charge is northward. What will be the force on an equal magnitude negative charge at the same place?
Class 12 · Physics
→A negative charge experiences a force of 0.01 newton towards east. What is the direction of electric field at that location?
Class 12 · Physics
→A force of 0.008 newton acts on a 4 microcoulomb positive charge at a point. What is the magnitude of electric field at that point?
Class 12 · Physics
→The electric field at a point is 600 newton per coulomb. What force acts on a 2 microcoulomb positive charge placed there?
Class 12 · Physics
→At a point, fields due to two charges are individually non-zero, yet the net field can be zero. Which principle explains this?
Class 12 · Physics
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