A student sets up an electric circuit shown here for finding the equivalent resistance of two resistors in series:

In this circuit, the:
(1) resistors have been connected correctly but the voltmeter has been wrongly connected
(2) resistors have been connected correctly but the ammeter has been wrongly connected
(3) resistors, as well as the voltmeter, have been wrongly connected
(4) resistors, as well as the ammeter, have been wrongly connected

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Solution

To measure the equivalent resistance of the circuit, voltmeter needs to be connected in parallel across the outer ends of resistors connected in series. In the given circuit both the resistors are connected in series with the ammeter but the voltmeter is connected across the ends of only one resistor instead of both resistors. So, resistors have been connected correctly but the voltmeter has been wrongly connected.

Hence, the correct answer is option 1.

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Similar questions

Q. The only correct statement for the following electric circuit is:

(1) The Voltmeter has been correctly connected in the circuit
(2) The Ammeter has been correctly connected in the circuit
(3) The Resistors R₁and R₂ have been correctly connected in series
(4) The Resistors R₁ and R₂ have been correctly connected in parallel

Q. To find the resultant resistance of two resistors when connected in series, a student arranged the various components according to the circuit shown alongside:

The student, however, did not succeed in his objective. Which of the following mistake has been made by the student in setting up the circuit?
(1) position of voltmeter is wrong
(2) position of ammeter is wrong
(3) terminals of voltmeter are wrongly connected
(4) terminals of ammeter are wrongly connected

In the experiment on finding the equivalent resistance of two resistors connected in parallel three students connected the Voltmeter in their circuits in the three ways X, Y and Z shown here.

The voltmeter has been correctly connected in.

The ammeter, voltmeter and, resistors R₁ and R₂ connected in the circuit as shown below have been checked and found to be correct.

On plugging the key, the voltmeter reads 4.5 V but the ammeter reads 1.5 A. This is most likely because the wires joined to:

(1) resistor R₁ and loose
(2) resistor R₂are loose
(3) both the resistors R₁ and R₁ are loose
(4) ammeter terminals are loose

Q. The only correct statement for the two circuits (X) and (Y) shown below is :

(1) The resistors R₁ and R₂ have been connected in series in both the circuits
(2) The resistors R₁ and R₂have been connected in parallel in both the circuits
(3) In the circuit (X) the resistors have been connected in parallel whereas these are connected in series in circuit (Y)
(4) In the circuit (X) the resistors R₁and R₂ are connected in series while these are connected in parallel in circuit (Y)

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