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

Calculate the work done, Problem The work done by a force as it acts o...

Problem The work done by a force as it acts on an object equals the force times the displacement times the cosine of the angle between the force and displacement vectors. a

Superposition principle, Superposition principle The general idea is t...

Superposition principle The general idea is that, while a number of influences are working on a system, the total influence on that system is just the sum of the individual in

The mass of 1 mole of electrons is, The mass of 1 mole of electrons is: ...

The mass of 1 mole of electrons is: (1) 9.1x 10 -28 g (2) 1.008mg (3) 0.55mg (4) 9.1x 10 -27 g Ans:  (3)0.55mg

What are the disadvantages of fibers optics, What are the disadvantages of ...

What are the disadvantages of fibers optics? This must be borne in mind that the real nature of the conductor, in lighting systems, shows only one of the components responsible

Application to ballistic missiles, APPLICATION TO BALLISTIC MISSILES:  ...

APPLICATION TO BALLISTIC MISSILES:  "An unpowered and unguided missile is known as ballistic missile". The path followed by ballistic missile is known as "ballistic trajectory"

Electromagnetic waves, Find amplitude of electric field ina parallel beam o...

Find amplitude of electric field ina parallel beam of light of intensity 2W/m2 Ans: Given that intensity I=power/area=2W/M2 by using this formula :intensity I=(Emax^2/2c mue not

Motion in one direction, A ROCKETSHIP IN FREE SPACE MOVES WITH CONSTANT ACC...

A ROCKETSHIP IN FREE SPACE MOVES WITH CONSTANT ACCELERATION OF 9.8 METER PER SECOND SQUARE. IF IT STARTS FROM REST HOW LONG IT WILL TAKE TO ACQUIRE A SPEED ONE-TENTH THAT OF LIGHT

Explain the nuclear chain reactions, Explain the Nuclear Chain Reactions ...

Explain the Nuclear Chain Reactions Fission is the breaking up of a massive nucleus into two fragments, with the release of energy and some particles. Uranium 235 fissions upon

Body, what is meant by body in physics

what is meant by body in physics

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