Ammeters, Physics

Assignment Help:

Ammeters :

Ammeters are used to measure current flow, as such they need to be inserted in series with the circuit under test so that the current to be measured flows through the meter. This means the circuit must be broken.

1272_ammeter.png

To connect an ammeter, the power must be switched off. The circuit is broken at the point where the current is to be measured. The meter is then inserted into the circuit in such a way that, 'conventional current' flows into the red lead and out of the black lead. Once the meter is connected, circuit power is restored and the measurement taken.

To disconnect the meter, the circuit power must again be switched off. Once the meter is removed from the circuit, the circuit must be reconnected.

 


Related Discussions:- Ammeters

Factors affecting capacitance, Factors affecting capacitance: The facto...

Factors affecting capacitance: The factors which affect the capacitance of a parallel-plate capacitor are: Overlapping area of the plates (A). The capacitance increases

Electricity, describe the applications of potentiometers

describe the applications of potentiometers

Brownian motion, Brownian motion (R. Brown; 1827) It is the continuous...

Brownian motion (R. Brown; 1827) It is the continuous random motion of solid microscopic particles while suspended in a fluid medium because of the consequence of ongoing bomb

Atomic bonding, There is more number of substances in the universe than 109...

There is more number of substances in the universe than 109 elements. Most matter we run into on a day-to-day basis is composed of compounds-substances in which two or more element

Draw a labelled diagram of van de graff generator, An a.c. voltage E = E 0 ...

An a.c. voltage E = E 0 sin cot is applied across an inductor L. Get an expression for current I. Draw a labelled diagram of Van de Graff generator. Verify its principle of wor

Pv diagram, is always del U o in cyclic process

is always del U o in cyclic process

Use of monetary and fiscal policy, The government uses monetary and fiscal ...

The government uses monetary and fiscal policy to mitigate the effects of economic fluctuations

Motion in one dimension, A woman walks 250m in the direction 35 degrees eas...

A woman walks 250m in the direction 35 degrees east of north, then 170m directly east. (a) using graphical method, find her final displacement from the starting point. (b) compare

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd