The time required for a pulse to change form 10 to 90 percent of its maximum value is defined as _____________.

The correct option is A Rise time

The time required for a pulse to change form 10 to 90 percent of its maximum value is defined as rise time.

In electronics, when describing a voltage or current step function, rise time is the time taken by a signal to change from a specified low value to a specified high value. These values may be expressed as ratios or, equivalently, as percentages with respect to a given reference value. In analog electronics or digital electronics, these percentages are commonly the 10% and 90% of the output step height: however, other values are commonly used.