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Class 12 Mcq

Class 12 Physics के इस tag से जुड़े questions। हर question के साथ chapter, topic, level और difficulty दी गई है।

PhysicsIf the distance from a point charge is doubled and the charge is made four times as large, how will the new electric field compare with the old one?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsThe electric field due to a point charge at point A is nine times that at point B. If both points lie in the same direction from the charge, what is the ratio of their distances?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsAt a point on the perpendicular bisector of two equal negative charges, what is the direction of the net electric field?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsAt a point on the perpendicular bisector of two equal positive charges, what is the direction of the net electric field?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsIn an upward electric field, in which direction must an external force be applied to keep a positive charge at rest?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Easy PhysicsAt a point, field lines are directed south. In which direction should an external force be applied to keep a negative charge at rest?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsIf field lines are dense in a region but the force on a charge is small, what is the most likely reason?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsIf the test charge is too large, what problem can arise in the definition of electric field?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Easy PhysicsWhen the positive test charge at a point is doubled, the measured force doubles. What conclusion follows about the electric field?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Easy PhysicsAt the midpoint of two equal opposite charges the electric potential can be zero, but why is electric field not zero?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsAt a point the electric field is zero but electric potential is positive. In which arrangement can this happen?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsIn the same electric field the force magnitudes on a proton and an electron are equal. Why are their accelerations not equal?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsA proton and an electron are placed in the same uniform electric field. Which statement about the magnitudes of the forces is correct?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsAn electron is released in a uniform westward electric field. In which direction will it accelerate?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsA positive charge is held at rest in a uniform eastward electric field. What happens just after the external force is removed?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsElectrostatic field lines do not form closed loops. What deeper idea is this related to?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Hard PhysicsIf two field lines are assumed to intersect, what contradiction arises about force on a positive test charge at that point?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsOn a curved field line the tangent directions at two nearby points are different. What conclusion follows?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsPoints A and B lie on field lines. Lines are closer near A and farther near B. Where will the force on the same positive charge be greater?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium PhysicsIf field lines in a small region are nearly parallel but not equally spaced, is the electric field uniform?Class 12Electric Charges and FieldsElectric Field and Electric Field LinesLevel 17Medium