Question

Identify the circuit in which the electrical components have been properly connected.

• A.
• B.
• C.
• D.

Answer 1

The correct option is B

Explanation for Correct Option:

Option (B):

1. The voltmeter should always be connected in parallel to the resistance, in order to measure the potential difference flowing across this resistance.
2. The ammeter should always be connected in series with the circuit in order to measure the current passing through it.
3. The negative terminal of the ammeter should be connected to the negative terminal of the power source.
4. We can see that all of these conditions are being satisfied in the circuit B

Explanation for Incorrect Option:

Option (A):

1. The voltmeter should always be connected in parallel to the resistance, in order to measure the potential difference flowing across this resistance.
2. In this case, the voltmeter is connected in series.
3. Hence, this option is incorrect.

Option (C):

1. The voltmeter should always be connected in parallel to the resistance, in order to measure the potential difference flowing across this resistance.
2. The ammeter should always be connected in series with the circuit in order to measure the current passing through it.
3. In this case, the voltmeter is connected in series, and the ammeter is connected in parallel.
4. Hence, this option is incorrect.

Option (D):

1. The negative terminal of the ammeter should be connected to the negative terminal of the power source.
2. In this case, the positive terminal of the ammeter has been connected to the negative terminal of the power source.
3. Thus, this option is incorrect.

Hence, option (B) has a properly connected electrical circuit.