A low frequency AC current is passed through a galvanometer. What will be the behavior of the pointer needle?

The needle remains stationary at zero reading

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The needle points to the rms value of ac

No worries! We‘ve got your back. Try BYJU‘S free classes today!

The needle fluctuates about zero reading with a frequency equal to current frequency

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

The needle fluctuates about zero reading with a frequency half of current frequency

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B The needle fluctuates about zero reading with a frequency equal to current frequency
Needle of galvanometer shows magnitude and direction of current through it. In AC, both are continuously changing periodically and this behavior is observed in the needle.

Suggest Corrections

Similar questions

Q. A magnetic needle vibrates in a vertical plane parallel to the magnetic meridian about horizontal axis passing through its centre. The frequency is

π

. If the plane of oscillation turned about a vertical axis by

90^{o}

, the frequency of oscillation in vertical plane will be:

Q. A magnetic needle vibrates in a vertical plane parallel to the magnetic meridian about a horizontal axis passing through its centre. Its frequency is

π

. If the plane of oscillation is turned about a vertical axis by

90^{o}

, the frequency of its oscillation in vertical plane will be

A compass needle is placed below a wire and a current is made to flow through the wire. The needle will

Q. When current passes through the circuit a compass needle rests in which direction (with respect to the Earth)?

A galvanometer, whose resistance is 50 ohm, has 25 division in it. When a current of $4 \times 10^{- 4} A$ passes through it, is its needle (pointer) deflects by one division. To use this galvanometer as a voltmeter of range $2.5 V,$ it should be connected to a resistance of:

Join BYJU'S Learning Program

A low frequency AC current is passed through a galvanometer. What will be the behavior of the pointer needle?

The correct option is B The needle fluctuates about zero reading with a frequency equal to current frequencyNeedle of galvanometer shows magnitude and direction of current through it. In AC, both are continuously changing periodically and this behavior is observed in the needle.

The correct option is B The needle fluctuates about zero reading with a frequency equal to current frequency
Needle of galvanometer shows magnitude and direction of current through it. In AC, both are continuously changing periodically and this behavior is observed in the needle.