The ratio of the resistance of ammeter to the shunt resistance used will be 9:1.
For a moving coil meter to deflect FS, a fixed quantity of current is needed. Knowing this value facilitates calculating the resistance required to convert to a voltmeter. Therefore, the less the process of measuring the voltage influences the real voltage, the more sensitive the meter is (lower current required to induce a full-scale deflection of the meter).
With a current of 1 amp, an ammeter's full-scale deflection is produced (r1 = 1V = V; r2 = 10V = 0.1V).
The ratio of the ammeter's resistance to the shunt resistance was utilized, which was r2r1 = 0.1V V0.1V
= 0.1*0.9V
= 9:1
The complete question is-An ammeter gives full scale deflection with a current of 1 amp. It is converted into an ammeter of range 10 amp. The ratio of the resistance of ammeter to the shunt resistance used will be
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