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

Define core type transformers, Core type Transformers: In this type of ...

Core type Transformers: In this type of transformer the windings enclose the core (fig. given below). Both the windings are divided and half of every winding is placed on eac

Similarities in construction of MOSFET and JFET, Similarities in Constructi...

Similarities in Construction of MOSFET and JFET (i)  JFET is a three terminal semiconductor device (source, drain and gate) in which current conduction is by majority carriers

How are fiber optic made, How are fiber optic made? The actual process ...

How are fiber optic made? The actual process varies significantly from one manufacturer to other. In essence, a huge cylinder of core is made off high purity material, an eleme

Hydrazine monopropellant, What is the mass of a two stage launch vehicle ca...

What is the mass of a two stage launch vehicle capable of putting a 100kg satellite into orbit around Mars, beginning in a parking orbit altitude at Earth of 200 km. Solve this pro

Define the period and the square root of the length, What is the relationsh...

What is the relationship among the period and the square root of the length? The graph is linear, so the period is proportional to the square root of the length of the string.

Properties of positive rays, (i) These are positive ions having similar mas...

(i) These are positive ions having similar mass if the experimental gas does not have isotopes. However if the gas has substances then positive pulses are group of positive ions ha

Calculate static resistance, give examples for how to calculate static resi...

give examples for how to calculate static resistance.

Describe the operation of a transistor amplifier, Describe the operation of...

Describe the operation of a transistor amplifier in CE configuration. Ans:  Operation  of  a  Transistor  Amplifier  in  CE  configuration:    A  Common  Emitter  NPN transist

SI unit, what is the importance of si unit

what is the importance of si unit

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