Question

how is the reading of an ammeter different from a voltage

Answer 1

One measures amperage and the other measures voltage...two different quantities.

The meters themselves also differ:
- An ammeter is a low-resistance device that's connected in series with a circuit. This is necessary so that it can measure the current which goes through the meter.

- A voltmeter is a high impedance device which is connected in parallel to a load and simply measures the difference of potential between the two leads.

Answer 2

Simply,
the ammeter measures the current when placed somewhere in a circuit
and
the voltage is entirely different thing which is measured by a voltmeter when connected in parallel to those points between whom we need to know the potential difference.
am i clear..?

Answer 3

V=IR
so current deviation is is always less than voltage deviation because resistance is never zero in standard conditions. . .

Answer 4

I'm not sure how you came to that conclusion or how it answers the question. Current is directly proportional to voltage.

Answer 5

In a purely resistive circuit of course.

Answer 6

shane boy its directly proportional to voltage but current show deviation of mA but voltage shows in V
so the needle would rise rapidly in voltmeter but slowly in ammeter. . .

Answer 7

That's not true. If you have a circuit with a resistance of 1ohm...a voltage of 1V...and you increase the voltage to 2V. The current will increase to 2A and will be seen as 2A on any ammeter rated for that range.

Answer 8

If the meter face is in milliamps (and can go high enough), it will read 2000mA...same as 2A...still directly proportional.

Answer 9

boy have you been using ammeter and voltmeter for real??
if yes you would have known to what i am talking. . .

Answer 10

for resistance offered very small like 0.1 ohm the current will rise faster than voltage. . .
for resistance offered =1ohm current and voltage both will rise similarly. ..
for resistance offered >1ohm the voltage would rise faster than current got it??

Answer 11

I agree with what you've *just said*...but your initial statement was:

"so current deviation is is always less than voltage deviation because resistance is never zero in standard conditions. . "

Which is not true by your own words:

"for resistance offered =1ohm current and voltage both will rise similarly."
"for resistance offered very small like 0.1 ohm the current will rise faster than voltage. . ."

Nothing I have said is false...and since I've been doing electrical work for 23+ years, I'm pretty sure I know how this works.

Answer 12

resistance offered is generally not less than 1 in digital circuits where it is mostly used thats y i said the first statement in laboratory thats how it works. . .
23 year??
then your sir not boy i thought i am the senior one here. . .

Answer 13

Well, I think we agree on how it works....it's just that you said it "always less" and I disagreed with that. No worries :)

Answer 14

I'll give you a medal for the discussion...I'm sure someone will find it enlightening.