Question

A positively charged particle of certain mass may be suspended (at rest) in electric field of suitable strength if the field is directed
a)outward
b)inward
c)downward
d)upward

Answer 1

If the electric field is directed d) upward

Explanation:

In order for a positively charged particle to be suspended at rest, the electric force due to the electric field must be

1) equal in magnitude, and

2) opposite in direction

to the force of gravity acting on the particle. Since the force of gravity acts downward, the electric force must be upward. The electric force on a charged particle is given by

$F=qE$

where

q is the charge

E is the electric field

And the direction of the force is:

• The  same as the electric field for a positive charge
• Opposite to the direction of the field for a negative charge

Here we have a positive charge, therefore the direction of the electric field must be the same as the direction of the force, therefore upward.

Learn more about electric field:

brainly.com/question/8960054

brainly.com/question/4273177

#LearnwithBrainly