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Calculate the electric power for a 12-V DC circuit drawing 3 A.

Select one:
A. [tex]12 V + 3 A = 15 W[/tex]
B. [tex]12 V / 3 A = 4 W[/tex]
C. [tex]3 A / 12 V = 0.25 W[/tex]
D. [tex]3 A \times 12 V = 36 W[/tex]



Answer :

GinnyAnswer
To determine the electric power in a 12-volts (V) direct current (DC) circuit drawing 3 amperes (A), you use the formula for electric power given by:

[tex]\[ P = V \times I \][/tex]

where:
- [tex]\( P \)[/tex] is the electric power in watts (W),
- [tex]\( V \)[/tex] is the voltage in volts (V),
- [tex]\( I \)[/tex] is the current in amperes (A).

Plugging in the values provided:

[tex]\[ P = 12\,V \times 3\,A \][/tex]

[tex]\[ P = 36\,W \][/tex]

So, the electric power in the circuit is 36 watts.

Therefore, the correct answer is:

D. [tex]\(3\,A \times 12\,V = 36\,W\)[/tex]

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