Lightning flash can cause injury by all of the following, Except:
D i.e. Compressed air pushed in front of the current Lightning flash can cause injury by 4 factors (of Spencer) which are - direct effect of high voltage current, burning caused by superheated air, effect of expanded and repelled air and sledge hammer blow by compressed air pushed before (not in front of) the currentQ.
Direct effect of electric current
Super heated air
Expanded and repelled air
Compressed air pushed in front of the current