An ideal galvanometer or ammeter has zero resistance since in this case the mete

Question

An ideal galvanometer or ammeter has zero resistance since in this case the meter will not affect the resistance of the circuit for which we wish to measure the current. However, it is not possible for any meter to have zero resistance under normal operating conditions. Thus our first task is to measure the resistance of the galvanometer. This can be accomplished by the half scale method (Appendix 2). Figure 1 shows the circuit used to measure Rg.

Both Reand Rparedecade resistance box. The procedure for measuring Rgis as follows:

How to read a decade resistance box.

The decade resistance box can be used to dial any resistance between 1 and 1.1.. M?.

DECADE RESISTANCE BOX

Show Re=?

DECADE RESISTANCE BOX

Show Rp=?

Explanation / Answer

7879 is first one 119 is the 2nd

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