Answer:
The magnitude of electric field is
in downward.
Explanation:
Given that,
Force 
Charge q= -2.00 μC
We know that,
Charge is negative, then the electric field in the opposite direction of the exerted force.
We need to calculate the magnitude of electric field
Using formula of electric force




Negative sign shows the opposite direction of electric force.
Hence, The magnitude of electric field is
in downward.
Answer:
filament bulb, filament lamp
Explanation:
The formula PE(Potential Energy)= mgh
Answer:
Option D is the correct answer.
Explanation:
We equation for elongation
Here we need to find weight required,
We need to stretch a steel road by 2 mm, that is ΔL = 2mm = 0.002 m

E = 200GPa = 2 x 10¹¹ N/m²
L=2m
Substituting

Option D is the correct answer.