Answer:
The radius is 
Explanation:
From the question we are told that
The current is 
The magnetic field is 
Generally the magnetic field produced by a current carrying conductor is mathematically represented as
=> 
Here 
is the permeability of free space with value 
=> 
=>
Answer:
Explanation:
According to Gauss's Law, the electric flux of a charged sphere is the electric field multiplied by the area of the spherical surface:
This is identical to the electric flux of a point charge located in the center of the sphere.
Answer:
It refracts when it hits the glass.
Answer:
Average speed = (total distance) / (total time)
Total distance = 100 km + 200 km = 300 km
Total time = 2 hrs (first part) + 1/2 hr (stop) + 4 hrs (second part) = 6.5 hrs
Average speed = 300 / 6.5 = 46.154 km/hr (rounded)
Explanation:
Transformers only work with AC.
If you put DC into a transformer, all that comes out is smoke.
(a)
