MyQuestionIcon

1

You visited us 1 times! Enjoying our articles? Unlock Full Access!

Ohm's Law

In hot wire a...

Question

In hot wire ammeter, when AC is passed, then the length of wire -

A

increases

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

B

decreases

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

C

remain constant

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

D

first decreases then increases

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

Open in App

Solution

The correct option is A increases
Hot wire ammeter is based on the heating effect of wire. Due to heating, the length of wire increases.

Suggest Corrections

thumbs-up

0

Similar questions

Q. Hot wire ammeters measure the _______ value of AC.

Q. Hot wire ammeter is based on the principle of

Q. A DC ammeter and a hot wire ammeter are connected to a circuit in series. When a direct current is passed through a circuit, the DC ammeter shows

6 A

. When AC current flows through a circuit, the AC ammeter shows

8 A

. What will be reading of each ammeter if DC and AC currents flow simultaneously through the circuit?

A C

current flowing through a wire is given by,

I = I_{1} sin ω t + I_{2} cos ω t

. A hot wire ammeter will give a reading of -

Q. Two alternating currents having the value

I_{1} = 3 sin ω t

I_{2} = 4 sin (π / 2 - ω t)

are superimposed and passed through a hot wire ammeter. Then the reading of the ammeter will be

View More

Join BYJU'S Learning Program

similar_icon

Related Videos

lock

Ohm's Law

PHYSICS

Watch in App

explore_more_icon

Explore more

Standard X Physics

Join BYJU'S Learning Program

CrossIcon