2. The movement of charge in an electric field from one point to another at a co

Question

2. The movement of charge in an electric field from one point to another at a constant speed without the expenditure of work, by or against the field:
(a) is impossible
(b) can only occur along a field line
(c) can only occur along an equipotential
(d) can only occur in a uniform field

3. Two point charges are spaced a distance 2D apart. On the line joining these charges, mid-way between them at a distance D from each charge, the electric potential is zero. This means that:
(a) the charges are equal in value but of opposite sign.
(b) both are identical positive charges
(c) both are identical negative charges
(d) the two charges could be either both positive or both negative so long as they both have the same magnitude.

Explanation / Answer

2) it is possible only along equipotential surface, since for this surface the potential difference is same between two points, no work is required, so 'C' is correct 3) option 'A' is correct, since potential V = k q/r if only two charges are opposite in sign only, then potential is zero at the mid way between the charges

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.