Find the true statement.(a) Ammeter is an instrument used to measure potential difference across any element in a circuit(b) Voltmeter is an instrument used to measure current in a circuit(c) Galvanometer constant is dimensionless(d) Current sensitivity is expressed as the exact reverse of the galvanometer constantThis question was posed to me by my college professor while I was bunking the class.I want to ask this question from Moving Coil Galvanometer in section Moving Charges and Magnetism of Physics – Class 12

Find the true statement.(a) Ammeter is an instrument used to measure p

1.	Find the true statement.(a) Ammeter is an instrument used to measure potential difference across any element in a circuit(b) Voltmeter is an instrument used to measure current in a circuit(c) Galvanometer constant is dimensionless(d) Current sensitivity is expressed as the exact reverse of the galvanometer constantThis question was posed to me by my college professor while I was bunking the class.I want to ask this question from Moving Coil Galvanometer in section Moving Charges and Magnetism of Physics – Class 12
Answer» Correct answer is (d) Current sensitivity is expressed as the EXACT reverse of the galvanometer CONSTANT Easiest explanation: Current sensitivity is defined as the deflection PRODUCED in the galvanometer, when unit current flows through it. IS = \(\frac {NAB}{k}\)………………1 The unit of current sensitivity is rad A^-1 or DIV A^-1. From 1, we can UNDERSTAND that current sensitivity is expressed as the exact reverse of galvanometer constant (G = \(\frac {k}{NAB}\)).

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