A circuit to verify Ohm's law uses ammeter and voltmeter

Question:

A circuit to verify Ohm's law uses ammeter and voltmeter in series or parallel connected correctly to the resistor. In the circuit:

  1. (1) ammeter is always used in parallel and voltmeter is series

  2. (2) Both ammeter and voltmeter must be connected in parallel

  3. (3) ammeter is always connected in series and voltmeter in parallel

  4. (4) Both, ammeter and voltmeter must be connected in series


Correct Option: 4

Solution:

(4) Ammeter : In series connection, the same current flows through all the components. It aims at measuring the current flowing through the circuit and hence, it is connected in series.

Voltmeter: A voltmeter measures voltage change between two points in a circuit. So we have to place the voltmeter in parallel with the cicuit component.

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