Ammeters

So ive been told that an ammeter needs a negligible resistance so that the current doesnt decrease, but i also thought that the current in a series circuit was always constant so which is right? or are both ? (Might be a silly question and im missing something easy)

Reply 1

username986184

3

Original post by Angus09

So ive been told that an ammeter needs a negligible resistance so that the current doesnt decrease, but i also thought that the current in a series circuit was always constant so which is right? or are both ? (Might be a silly question and im missing something easy)

Both correct.

Reply 2

Dowel

8

Original post by Angus09

So ive been told that an ammeter needs a negligible resistance so that the current doesnt decrease, but i also thought that the current in a series circuit was always constant so which is right? or are both ? (Might be a silly question and im missing something easy)

If you add an Anmeter with resistance the current would decrease and then be at a lower constant value. Current is constant in a series circuit unless you add resistance

I=V/R

so if you add resistance current gets smaller as Voltage is constant (unless you change the settings of the cell/battery pack)

Reply 3

TheConfusedMedic

21

I think they're both right?

Reply 4

username986184

3

Original post by Angus09

So ive been told that an ammeter needs a negligible resistance so that the current doesnt decrease, but i also thought that the current in a series circuit was always constant so which is right? or are both ? (Might be a silly question and im missing something easy)

Here

image.jpeg193.0KB

Ammeters

Quick Reply

Related discussions

Latest

Trending

Trending

Articles for you