1. The problem statement, all variables and given/known data So i was in a course yesterday and the "teacher" told us the following (which i had a hard time believing/understanding) There is a load connected to a transformer. Applied potential difference is 230V. The load is malfunctioning and the insulation isn't working anymore. The load is now at 23V. Now the guy told us there is no harm on touching the load, there will not be any current through the person into the ground. 2. Relevant equations U=R*I 3. The attempt at a solution His explanation was that there can't be any current because there isn't a closed loop. imo the only requirements needed for current is a potential difference and a non-ideal insulation. i asked him how he would explain thunder as there isn't any closed loop during the discharge of the cloud. Suffice to say, he didn't convince me. Now can someone tell me what to believe? And maybe throw in a kind of explanation of why i'm wrong? Thanks!