Question

If 300 mA has been selected for a particular exposure, what exposure time should be selected to produce 18 mAs?

60 ms

Answer 1

To calculate the exposure time, divide the desired mAs by the mAs per second. In this case, with 300 mA and 18 mAs, the exposure time is 60 ms.

Step-by-step explanation:

To calculate the exposure time, we can use the formula:

exposure time = mAs / mAs per second

Given that 300 mA has been selected for the exposure and we want to produce 18 mAs, we can substitute these values into the formula:

exposure time = 18 mAs / (300 mA)

Now we can convert mA to seconds by multiplying by 0.001:

exposure time = 18 mAs / (300 mA * 0.001)

Calculating this expression, we get:

exposure time = 18 mAs / 0.3 s = 60 ms.