What is voltage sensitivity ? write its equation.

Explanation

1. Voltage sensitivity is define as the deflection per unit voltage.
From equation,
2. `phi/I=(NAB)/k`
`thereforephi=((NAB)/k)I`
Divide by V on both the sides,
`phi/V=((NAB)/k)I/V`
but taking `I/V=I/R`,
`thereforephi/V=((NAB)/k)I/R`
which is equation for voltage sensitivity.