1. Above this frequency, the inductor actually has capacitive reactance . 2. An antenna shorter than a quarter wavelength presents capacitive reactance to the transmission line. 3. As frequency goes up, inductive reactance goes up and capacitive reactance goes down. 4. At, the capacitive reactance of is: 5. "Capacitive reactance " is an opposition to the change of voltage across an element. 6. These have a very low radiation resistance ( and a high capacitive reactance ) making them inefficient antennas. 7. Electrical impedance is computed as the vector sum of electrical resistance, capacitive reactance , and inductive reactance. 8. The ratio of peak voltage to peak current is due to capacitive reactance ( denoted X C ). 9. If the tower is very short, it will have its capacitive reactance tuned out by this matching network. 10. Assuming a more conservative run of, say 26m, this would give a capacitive reactance of about 1Megohm.