Question

A current of 87 μA passes through a wire. What is the equivalent current in milliamperes (mA)?

A) 0.000087 mA
B) 0.087 mA
C) 8.7 mA
D) 87 mA

Answer 1

To convert 87 microamperes (μA) to milliamperes (mA), divide by 1000, resulting in 0.087 mA. The correct answer is option B.

Step-by-step explanation:

The current of 87 μA is equivalent to 0.087 mA. To convert microamperes (μA) to milliamperes (mA), divide the current in microamperes by 1000, because one milliampere is equal to one thousand microamperes. Here is the calculation:

87 μA ÷ 1000 = 0.087 mA

The correct answer is B) 0.087 mA. It's important to remember that in the context of electric current, commonly used submultiples of an ampere are milliamperes (mA) and microamperes (μA), with 1 A = 1000 mA and 1 mA = 1000 μA. Such conversions are pivotal in electronics and electrical engineering.