# 99.  A moving coil galvanometer of resistance 20 $\Omega$ gives a full scale deflection when a  current of 1 mA is passed through it.  It is to be converted into an  ammeter reading 20 A on full  scale deflection.  If shunt wire of 0.005 $\Omega$ only is available then what resistance should be connected in series with the galvanometer coil.

• -7
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