To test a dry cell battery, the terminal ends of {TAIL ~ the conductive material} are placed in {HEAD ~ contact} with the battery terminals, causing a current to flow which heats the conductive material, the heat generated being the most intense at the central point and radiating outwardly 
To test a dry cell battery , the terminal ends of { TAIL ~ the conductive material } are placed in { HEAD ~ contact } with the battery terminals , causing a current to flow which heats the conductive material , the heat generated being the most intense at the central point and radiating outwardly
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH