Which is true about rheobase?

Ans. C Minimum strength of stimulus to produce action potential* Rheobase: The minimum strength of a stimulus, which is able to produce AP in an excitable tissue (e.g. Nerve, muscle), regardless of the duration it takes.* Utilization time: Minimum time (duration) for which the rheobase has to be applied for excitation of tissue.* Chronaxie: Minimum time (duration) for which a stimulus double the rheobase has to be applied for excitation of tissue.