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TFM

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**[SOLVED] A Multirange Coil Ammeter Galvonmeter (?) resistance question**

## Homework Statement

A Multirange Ammeter. The resistance of the moving coil of the galvanometer G in the figure (See Below) is 48 Ohms, and the galvanometer deflects full scale with a current of 0.0200 A. When the meter is connected to the circuit being measured, one connection is made to the post markedand the other to the post marked with the desired current range.

__Part A__

Find the magnitude of the resistance R1 required to convert the galvanometer to a multirange ammeter deflecting full scale with currents of 10.0 A, 1.00 A, and 0.100 A.

__Part B__

Find the magnitude of the resistance R2 required to convert the galvanometer to a multirange ammeter deflecting full scale with currents of 10.0 A, 1.00 A, and 0.100 A.

__Part C__

Find the magnitude of the resistance R3 required to convert the galvanometer to a multirange ammeter deflecting full scale with currents of 10.0 A, 1.00 A, and 0.100 A.

## Homework Equations

*(I'm not sure which are actually relevant, so I will put a few down)*

P=IV

V=IR

*Kirchoff Rules:*

Current Going into Junction equals total current Out of Junction

Total Voltage over a loop = 0

Resistors in Series:

[tex] R_{equv} = R_1 + R_2 + R_3 [/tex]

## The Attempt at a Solution

The question has confused me as to what I should do! Are we supposed to assume that the other resistors aren't there when find the Resistance?

Any Ideas will be greatly appreciated,

TFM ()