If 200 mA is used for 0.12 seconds, what is the resulting mAs?

To determine the mAs (milliampere-seconds), you multiply the current in milliamperes (mA) by the time in seconds. In this case, you have 200 mA and a duration of 0.12 seconds.

Calculating this gives:

200 mA * 0.12 seconds = 24 mAs.

This indicates that for the given exposure conditions, the machine will deliver 24 milliampere-seconds of total exposure. The value of 24 represents the product of the current and the exposure time, which is crucial for ensuring that an appropriate dose of radiation is used during the imaging process. Proper calculation of mAs is vital for effective imaging while minimizing patient exposure to radiation. Therefore, the correct answer aligns with this calculation yielding 24 mAs.