Question

To determine the equivalent resistance of two resistors when connected in series, a student arranged the circuit components as shown in the diagram But he did not succeed to achieve the objective [CCE 2010]
Which of the following mistakes has been committed by him in setting up the circuit?
(a) Position of ammeter is incorrect
(b) Position of voltmeter is incorrect
(c) Terminals of ammeter are wrongly connected
(d) Terminals of voltmeter are wrongly connected

Answer 1

Answer:

To determine the equivalent resistance of two resistors when connected in series, a student arranged the circuit components as shown in the diagram But he did not succeed to achieve the objective [CCE 2010]

Which of the following mistakes has been committed by him in setting up the circuit?

(a) Position of ammeter is incorrect

(b) Position of voltmeter is incorrect

(c) Terminals of ammeter are wrongly connected

(d) Terminals of voltmeter are wrongly connected

Answer 2

(c) Terminals of ammeter are wrongly connected

The ammeter here would be used to measure the current passing through the wire with the resistances in series. However the terminals of ammeter are wrongly connected. The positive terminal of ammeter must be connected to the positive terminal of the battery, and negative with the negative.

Hope it helps

regards, Akash Kumar

Thanks