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Define Voltage sensitivity ?...

Define Voltage sensitivity ?

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It is defined as the deflection produced per unit voltage applied across it.
`V_(s) = (theta)/(V)`
`V_(s) = (theta)/(I R_(g)) = (NAB)/(KR_(g)) rArr V_(s) = (l)/(G R_(g)) = (I_(s))/(R_(g))`
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Expression for voltage sensitivity is (theta)/(v) = (NAB)/(CR) a. What are the factors on which voltage sensitivity depends on ? b. Why is it independent of number of turns ? c. How will you increase the voltage sensitivity ?

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Knowledge Check

  • The voltage sensitivity of a galvanometer can be increased by ________ .

    A
    increasing the current
    B
    increasing the couple per unit twist of the suspension wire
    C
    increasing the number of turns of the coil
    D
    increasing the magnetic induction .

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