An ammeter is always connected in series in a circuit because

its resistance is very high.

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its resistance is very low.

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it does not draw current from the circuit.

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its resistance is infinity.

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Solution

The correct option is B its resistance is very low.
Ammeter is a device obtained by connecting a very small resistance in parallel with galvanometer. Since, in parallel combination the equivalent resistance of the combination is always less than the smallest resistance, hence, the ammeter has negligibly small resistance. Due to this it allows the passage of maximum(almost equal) of main current in circuit and hence, it is connected in the series in a circuit to read the accurate current reading.

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Similar questions

Q. Which of the following is/are true for an ammeter?
A. An ammeter always reads lesser than actual current.
B. An ammeter always reads more than actual current.
C. An ammeter is always connected in series because it is a low resistance device.
D. An ammeter is always connected in series because it is a high resistance device.

Q. Assertion : Out of galvanometer, ammeter and voltmeter, resistance of ammeter is lowest and resistance of voltmeter is highest
Reason : An ammeter is connected in series and a voltmeter is connected in parallel, in a circuit

Q. When an ammeter of negligible internal resistance is inserted in series with circuit it reads

1 A

. When the voltmeter of very large resistance is connected across

X

it reads

1 V

. When the point

A

and

B

are shorted by a conducting wire, the voltmeter measures

10 V

across the battery. The internal resistance of the battery is equal to

Which statement is /are correct?
1. An ammeter is connected in series in a circuit and a voltmeter is connected in parallel.
2. An ammeter has a high resistance.
3. A voltmeter has a low resistance.

Q. An ammeter is
(A) Used to measure current in circuit
(B) Used to measure potential difference
(C) Has low resistance and connected in series
(D) Has high resistance and connected in series
The true options(s) is/are

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