A charged rod is touched to a small metallic sphere placed at the origin. This is done at time t = 0. A sensitive field detector detects the electric fields at points 10 cm away and 50 cm away at time t = 1 nanosecond.
The expression of Coulomb’s law can match the measured value
(a) at 10 cm point but not at 50 cm point
(b) at 50 cm point but not at 10 cm point
(c) both at 50 cm point and at 10 cm point
(d) neither at 50 cm point nor at 10 cm point
.
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