Class of accuracy in electrical measurements and voltmeters have a high but not infinite internal impedance. Thus the measured parameters are somewhat altered during the measurements. Let E be the EMF of the source R be the resistance of the load and r be the resistance of the ammeter. The current through the load is I When the ammeter is connected in series with the load the current I is The difference introduced by the measuring device is then, The ratio of the difference to the actual value is Class of accuracy in electrical measurements In electrical engineering class of accuracy is a figure which represents
What If She's an Angel What If She's an Angel "What If She's an Angel" is a debut song written by Bryan Wayne, and recorded by American country music artist Tommy Shane Steiner. It was released in December 2001 as the first single from Steiner's debut album "Then Came the Night". The song reached number 2 on the "Billboard" Hot Country Singles & Tracks chart in May 2002, becoming his only hit single. It was also Steiner's only entry on the "Billboard" Hot 100, peaking at 39. "What If She's an Angel" debuted at number 52 on the U.S. "Billboard" Hot Country Singles & Tracks