Answer & Solution
Answer: Option A
Solution:
To calculate power (P), you can use the formula:
P = Energy (E) / Time (t)
In this case, the energy is
12,000 J, and the time is
400 ms, which needs to be converted to seconds:
400 ms = 0.4 seconds
Now, you can calculate the power:
P = 12,000 J / 0.4 s = 30,000 W = 30 kW
So, the correct answer is
Option A: 30 kW, as the power is 30,000 watts or 30 kilowatts, which represents the rate at which energy is used or transferred.
