Answer:
38.5 N/C
Explanation:
The electric field generated by a charged sphere at a point outside the sphere is equivalent to the electric field generated by a single point charge, and it is given by

where
is the Coulomb's constant
Q is the net charge
r is the distance from the centre of the sphere
In this problem, we have


Substituting into the equation, we find

Answer:
False, if its not moving there is no potential energy.
<em>The answer you are looking for is: </em>
<em><u>True </u></em>
<em>Hope that helps!! </em>
<em>Have a wonderful day!!</em>
Answer with Explanation:
We are given that
Resistivity of copper wire=
Diameter=d=
Radius of copper wire=
Radius of solenoid=r'
1 m=100 cm
a.Length of wire=l=11.3 m
Area of wire=A=
Where 
A=
Resistance, R=
Using the formula


B.Length of solenoid=
m
Number of turns=
=60
C.Potential difference,V=3 V
Current,I=
I=
D.Total length =0.1 m
Number of turns per unit length,n=
Magnetic field along central axis inside of the solenoid,B=

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