- #1
Magna1
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A galvonometer has a coil resitance of 460 ohms and a full scale deflection current of of 100^10*-6 A What shunt resistor is needed to convert this galv.. into an ammeter which has a full scale deflection current of 200 ^10*-3 A? What is the resitance of the ammeter when it is completed? What percentage of current flows through both Ig and Is?
I figured Rs at 230.115^10*-3 ohms. ANd Rt of 460.23 ohms. but I know my Rt should be in milli ohms??/
Also without having a voltage how can I calculate the percentage of current flow?
I used
Rs=(Ig*rg)/Im-Ig)
and
Rt=Rs+Rm
am I going in the right direction?/
I figured Rs at 230.115^10*-3 ohms. ANd Rt of 460.23 ohms. but I know my Rt should be in milli ohms??/
Also without having a voltage how can I calculate the percentage of current flow?
I used
Rs=(Ig*rg)/Im-Ig)
and
Rt=Rs+Rm
am I going in the right direction?/