An ammeter and a Voltmeter are to be connected in a circuit. Which of the following statements are correct?

(A) Ammeter has negligible resistance.
(B) Ammeter is always connected in series in the circuit.
(C) Voltmeter should have negligible resistance.
(D) Voltmeter should be connected in parallel so that the whole current may pass through it.

Choose the correct answer from the options given below:

(A) and (B) only

The correct answer is Option (1) → (A) and (B) only

(A) Ammeter has negligible resistance. Correct. An ammeter is connected in series with the circuit to measure current. To ensure that it does not change the current flowing in the circuit, its resistance should be very small (ideally negligible).

(B) Ammeter is always connected in series in the circuit. Correct. An ammeter must be connected in series so that the same current that flows through the circuit also flows through the ammeter.

(C) Voltmeter should have negligible resistance. — Incorrect. A voltmeter should have very high resistance, not negligible resistance. This prevents it from drawing current from the circuit.

(D) Voltmeter should be connected in parallel so that the whole current may pass through it. — Incorrect. A voltmeter is connected in parallel, but the reason is to measure the potential difference across a component, not to allow the whole current to pass through it.