alleryStart learning →A charge sits at the centre of a sphere whose radius is then doubled. The flux through the sphere
Abecomes four times
Bstays the same
Cbecomes one fourth
Dbecomes half
Answer & Solution
Correct answer: B. stays the same
The enclosed charge is unchanged, so by Gauss's law the flux is the same; E falls as 1/r^2 while area grows as r^2.
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