1.

The charge given to a hollow sphere of radius 10 cm is \[3.2\times {{10}^{19}}\]coulomb. At a distance of 4 cm from its centre, the electric potential will be                                                                        [MP PMT 1990]

A.            \[28.8\times {{10}^{-9}}\,volts\]
B.            \[288\,volts\]
C.            2.88 volts
D.                                      Zero
Answer» B.            \[288\,volts\]


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