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Class 12 · Physics
→At a point the electric field is zero. If equal-magnitude positive and negative charges are placed there separately, what is correct about the forces?
Class 12 · Physics
→In a diagram, field lines start from one positive charge and end on a nearby positive charge. Why is this wrong?
Class 12 · Physics
→If electric field is zero at the midpoint between two equal positive charges, should field line density be shown high there?
Class 12 · Physics
→At a point region the electric field magnitude is very high but direction changes repeatedly. Why is it wrong to call it uniform only by magnitude?
Class 12 · Physics
→If a particle is uncharged, what electric force acts on it in a region with dense electric field lines?
Class 12 · Physics
→If a positive charge is placed in a non-uniform field directed eastward with strength increasing ahead, which statement about force is correct?
Class 12 · Physics
→If electric field lines suddenly become much closer in a region, what effect is possible on the motion of the same positive charge?
Class 12 · Physics
→A negative charge experiences a 13-newton force toward southwest. What is the direction of the electric field at that point?
Class 12 · Physics
→At a point, one electric field is 5 newtons per coulomb eastward and another is 12 newtons per coulomb northward. What is the magnitude of the net field?
Class 12 · Physics
→In a diagram, lines emerge from a positive charge and also emerge from a negative charge. What correction is needed?
Class 12 · Physics
→In a point-charge field-line diagram, the number of lines is doubled but the charge is said to be the same. What does this mean?
Class 12 · Physics
→Field lines are denser at a place, but force on the same positive charge is said to be smaller. Why is this conclusion doubtful?
Class 12 · Physics
→If field lines are directed to the right but potential is said to increase from left to right, what is the issue?
Class 12 · Physics
→A negative charge experiences force towards north. If a positive charge of equal magnitude is placed at the same point, what will be the force?
Class 12 · Physics
→If a positive test charge accelerates eastward in a region and its charge is halved while mass remains the same, what is the direction of the electric field?
Class 12 · Physics
→If an electron is released from rest in a uniform electric field, what will its motion indicate about the direction of field lines?
Class 12 · Physics
→For two equal unlike charges, a positive test charge is placed slightly above the midpoint. In which direction is the horizontal component of the electric field?
Class 12 · Physics
→What is the actual force direction on a positive test charge placed slightly to the right of the midpoint between two equal positive charges?
Class 12 · Physics
→At the midpoint between two equal positive charges the field is zero. If a very small positive test charge is displaced slightly to the right, what is the initial force direction?
Class 12 · Physics
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