Ahollow sphere (of negligible thickness) with no load, with a radius of 8.00 cm, surrounds a charge of 20.00 μc located at the origin of a cartesian coordinate system. a 2.00 mm radius drill is aligned along the z axis and a hole is made on the surface of the sphere. calculate the electrical flow through the borehole.

a

39.3 n*m2/c

b

17.7 n*m2/c

c

587 n*m2/c

d

35.3 n*m2/c

e

353 n*m2/c

The electrical flow through the borehole is 353 Nm²/C.

(e) is correct option.

Explanation:

Given that,

Radius = 8.00 cm

Charge = 20.00 μC

radius of drill = 2.00 mm

We need to calculate the electrical flow through the borehole

Using formula of electric flow

Where, q = charge

R = radius of sphere

r = radius of drill

Put the value into the formula

Hence, The electrical flow through the borehole is 353 Nm²/C.

an energy transformation flow diagram is shown

where is it ?

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia