Answer:
(a) 300 W
(b)0.90 J
Explanation:
(a) The electric power for any circuit element is given as
[tex]P=IV[/tex]
Here I is current passing in the circuit and V is the voltage.
Given I = 12 A and V =25 V.
Substitute the given values, we get
[tex]P=12 A \times25 V[/tex]
P = 300 W.
Thus, the power defibrillator deliver to the body is 300 W.
(b) To calculate the electric energy use the relation between electric energy, power and time as
[tex]E=Pt[/tex]
Given t = 3 ms.
Substitute the values, we get
[tex]E=300 W\times 3\times 10^-^3s[/tex]
E = 0.90 J.
Thus, the energy transferred is 0.90 J.
