Let the continuous random variable \(X\) denote the current measured in a thin copper wire in milliamperes. Assume that the range of \(X\) is \([4.9,5.1] \mathrm{mA}\), and assume that the probability density function of \(X\) is \(f(x)=5\) for \(4.9 \leq x \leq 5.1\). What is the probability that a current measurement is less than 5 milliamperes?