Class of accuracy in electrical measurements in series with the load, so the same current flows through the load and the ammeter. The voltmeter is used in parallel with the load, so the voltage between the two terminals of the load is equal to the voltage between the two terminals of the voltmeter. Ideally the measuring device should not affect the circuit parameters i.e., the internal impedance of the ammeter should be zero (no voltage drop over the ammeter) and the internal impedance of the voltmeter should be infinite (no current through the voltmeter). However, in actual case, ammeters have a low but non zero impedance
Jim Measures Hull Kingston Rovers in the 1964 Challenge Cup Final during the 1963–64 season at Wembley Stadium, London on Saturday 9 May 1964, in front of a crowd of 84,488. Jim Measures is the father of rugby league of the 1990s for St. Helens Colts, and A-Team, Leigh and Widnes Vikings; Neil 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