38 verified questions · ~42 minutes · answer key checked against the official NTA final key across multiple sources. Text-only questions (diagram-based excluded until they can be shown properly).
Choose the correct statement: Three charges 2q, −q, −q are located at the vertices of an equilateral triangle. At the centroid:
The electric charges are distributed in a small volume. The flux of the electric field through a sphere of radius 10 cm surrounding the total charge is 20 Vm. The flux over a concentric sphere of radius 20 cm will be:
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