PHY 457: ASSIGNMENT 31 In an experiment to determine resistance, Rg, of a galvanometer, the...

PHY 457: ASSIGNMENT 31
In an experiment to determine resistance, Rg, of a galvanometer, the governing equation is
given by
E
R+ Rg
through R which is a variable resistance such as could be
resistance box. Observation for R (k) and I (mA) are
I =
4.00 4.50 5.00
3.50
2.00 2.50 3.00
1.00 1.50
0.5
3.50 1.75 1.15 0.90 0.85 0.70 0.60
where I is the passing current
obtained from a Rheostat or
tabulated as in the following:
R (K2)
0.54 0.46 0.42
I (mA)
(a) IfE (V) is the constant emf to drive the current I (mA) in the circuit, write down the
equation you would use to enable you determine, Rg, and the magnitude of E
(b) Using the least squares method, determine the values of Rg and E
(c) Plot an appropriate graph to enable you find a value for vertical scatter, w
(d) Find the standard errors in Rg and E.
(e) What are the SI Units of w?

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Asked by Semen on 23rd February, 2024