An electric ell develops a 450V potential difference between its head and tail. The eel can stun a fish or other prey by using this potential difference to drive a 0.80 A current pulse for 1 ms. What is the energy delivered by this pulse and (b) what is the the total charge that flows?

Given Information:

Potential difference = V = 450 V

Current = I = 0.80 A

time = t = 1 ms = 0.001 s

Required Information:

(a) Energy = E = ?

(b) Total charge = q = ?

(a) Energy = 0.36 J

(b) Total charge = 8x10⁻⁴ C

Explanation:

(a) What is the energy delivered by this pulse

The energy is given by

E = V*I*t

Where V is the potential difference, I is the current flowing and t is the time.

E = 450*0.80*0.001

E = 0.36 J

(b) what is the the total charge that flows?

We know the current is the rate of charge

I = q/t

q = I*t

q = 0.8*0.001

q = 0.0008

q = 8x10⁻⁴ C

measuring things 1 litre of water

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