need a help with 2.21 The voltage can be determined to high accuracy, without ca
ID: 1328515 • Letter: N
Question
need a help with 2.21
The voltage can be determined to high accuracy, without causing a current to flow in either the unknown source or the standard cell, by first adjusting for a null reading on the meter with the standard cell connected (alpha 1) and then readjusting it for a null with the unknown connected (alpha 2). Derive an expression for V and show that the result is independent of V0,r1,r2, and R. Shown in (a) below is a linear resistor network with three ports in which currents flow as indicated. with the network connected as shown in (b), calculating the current Isc. with the network connected as shown in (c), calculating the Voltage Voc.Explanation / Answer
to solve it use ohms law and kirchooff's laws
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