Question

Why we use ammeter and voltmeter instead of galvanometer in photoelectric effect?

Answer 1

To measure wide range of currents, the resistance of a galvanometer is reduced by adding shunt resistors in parallel with the coil. To measure wide range of voltages, the resistance of agalvanometer is increased by adding resistors in series with the coil. Well, V.F. ... An ammeter is any instrument for measuring current.

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