What is the result of 3.0ma x 8 seconds?

• A. 30 UL
• B. 240 UL
• C. 360 UL
• D. 24 UL

Answer: (B)

To determine the result of multiplying 3.0 mA (milliamperes) by 8 seconds, you need to understand the relationship between current, time, and the resulting electrical charge.

In this context, the product of current (measured in amperes) and time (measured in seconds) gives you the total electric charge transferred in coulombs (C). However, to convert coulombs to microcoulombs (µC or UL), you can use the conversion factor that 1 Coulomb equals 1,000,000 microcoulombs.

First, calculate the charge in coulombs:

3.0 mA can be converted to amperes by recognizing that 1 mA equals 0.001 A. Therefore, 3.0 mA is equivalent to 0.003 A.

Now, multiply this by the time in seconds:

0.003 A x 8 s = 0.024 C.

Next, convert coulombs to microcoulombs:

0.024 C = 0.024 x 1,000,000 µC = 24,000 µC.

Since UL appears to represent microcoulombs in this context, converting it gives us