An insulating sphere of mass 10 g carries a negative charge of -5 C uniformly di

Question

An insulating sphere of mass 10 g carries a negative charge of -5 C uniformly distributed throughout its volume. The sphere experiences an instantaneous acceleration of 5000 m/s2 directed along the +z axis when it is placed at some point in space. Assuming that only electrostatic interactions are responsible for this acceleration, what is the electric field at that point? A. 10 N/C directed along the positive z-axis. B. 250 N/C directed along the positive z-axis. C. 250 N/C directed along the negative z-axis, D. 50 N/C directed along the positive z-axis. E. 10 N/C directed along the negative z-axis.

Explanation / Answer

apply gravitiational fore = electrical force

ma = Eq

where m is mass

a is accleration

E is electric field

and q is charge

so

E = ma/q

E = 10 e-3 * 5000/(5)

E = 10 N/C is-----------------<<<<<<<<<<<<<<<< the answerr

and direction will lone - z axis

so

ioption E is correct--------<<<<<<<<Answer

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