An electrical technique that uses the peaks and troughs of a sine wave source voltage is employed to measure the relative capacitance of a dynamic admittance cell containing cyclohexane at 2.1 and 6.3 GPa. Parameters for the linear shock‐particle velocity equation of motion of the liquid are deduced, and a procedure for measuring the shock temperature of selected materials is proposed. A model for shock electrification is given indicating that electrification is a consequence of a normal‐state material undergoing a species change. Cyclohexane is an unusual material under shock loading in that it does not exhibit a species change in the pressure range considered.