Question

2 fill in the blank 5 points given the following mas and ma values, calculate the exposure time.

	ma	time	mas
b.	300	type your a	120
c.	200	type your a	5
d.	600	type your a	15
e.	400	type your a	80

Explanation:

The formula relating mA (milliampere), time (in seconds), and mAs (milliampere - second) is \( \text{mAs} = \text{mA} \times \text{time} \), so we can solve for time using \( \text{time}=\frac{\text{mAs}}{\text{mA}} \).

Part a:

Step 1: Identify values

We have \( \text{mA} = 100 \) and \( \text{mAs}=75 \).

Step 2: Apply the formula

\( \text{time}=\frac{75}{100} = 0.75 \) seconds.

Part b:

Step 1: Identify values

We have \( \text{mA} = 300 \) and \( \text{mAs}=120 \).

Step 2: Apply the formula

\( \text{time}=\frac{120}{300}=0.4 \) seconds.

Part c:

Step 1: Identify values

We have \( \text{mA} = 200 \) and \( \text{mAs}=5 \).

Step 2: Apply the formula

\( \text{time}=\frac{5}{200} = 0.025 \) seconds.

Part d:

Step 1: Identify values

We have \( \text{mA} = 600 \) and \( \text{mAs}=15 \).

Step 2: Apply the formula

\( \text{time}=\frac{15}{600}=0.025 \) seconds.

Part e:

Step 1: Identify values

We have \( \text{mA} = 400 \) and \( \text{mAs}=80 \).

Step 2: Apply the formula

\( \text{time}=\frac{80}{400}=0.2 \) seconds.

Answer:

a. \( 0.75 \) seconds
b. \( 0.4 \) seconds
c. \( 0.025 \) seconds
d. \( 0.025 \) seconds
e. \( 0.2 \) seconds