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
Jim Measures Jim Measures James Measures (born 14 April 1939), also known by the nickname of "Jim", is an English former professional rugby league footballer who played in the 1950s and 1960s. He played at representative level for Great Britain, and at club level for St Helens, Widnes and the Rochdale Hornets, as a , i.e. number 11 or 12, during the era of contested scrums. Measures was born in St. Helens, Lancashire, England. Jim Measures won caps for Great Britain while at Widnes in 1963 against Australia (2 matches). Jim Measures played left-, i.e number 11, in Widnes' 13-5 victory over