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Is the positive terminal of an ammeter connected to the positive terminal of the energy source?
Wiki User
∙ 13y ago
No. An ammeter is to be connected in series, between the device and the battery's positive output, Its NEGATIVE terminal (red lead) has to be connected to the POSITIVE of the battery. Its positive terminal (black lead) will then be connected to the device's positive terminal. (Connecting an ammeter in series with a power supply by itself may damage or destroy the meter.)
Almost every single digital ammeter made will indicate reverse current, so the worst you might get is a displayed reading of a negative amperage if you connected it in reverse.
(For an illustration, see the related link)
Wiki User
∙ 13y ago
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Do electron tend to move a region of high potential or lower potential?
Electrons always move 4m a region of low potential 2 higher. While electrons move 4m negative 2 positive terminal they continuously gain energy as work is done on them by the positive terminal to attract them 2wards it. In this process an energy equal to the work done on the electrons ( by the positive terminal ) is gained by the electrons. That is y, as electrons cum closer to the positive terminal they hav high potential stored in them..The electrons, in order to attain this high potential flow 2wards the positive terminal of a battery wen connected in a circuit... Answered by - a 10th standard boy....:D...........
A battery has a difference in potential energy between the positive terminal and negative terminal which units express this difference in energy?
That's a difference in electrical potential, not potential energy.It's described in units of "volts".
What form of energy flows through a copper wire connecting the two ends of battery?
Electrical Energy. When a copper wire is connected to two ends of battery, the electrons on the -ve terminal (with excess of electrons) move to +ve terminal (electron deficit terminal) to maintain an equlilbrium, hence the energy created by these movement of 'electrons' is called 'electrical' energy
In a 1.5V battery taking the negative terminal as 0.0V what is the electrical potential energy of an electron leaving the negative battery terminal?
Somebody is trying a trick question! The electron that comes out of the negative terminal has zero potential energy. With respect to the positive terminal it has -1.5V of electrical potential energy, and so does every other electron at 0.0V whether or not they came out of the battery.
How are current transformers connected?
The CT's primary is inserted in series with the load. It's secondary is connected directly to the burden (e.g. ammeter). If used together with a VT (PT) for the purpose of measuring power or energy, then its polarity markings must be observed.
What is the composition of typical diode?
The typical diode consist of terminals. Terminal A is anode negative, Terminal B is cathode bearing positive energy. An epoxy dome secures lead frame.
What is meant by phantom loading?
The phantom loading is that no external load is connected in actual sense and the current and pressure coils are connected seperatly so that it will consume only less power. In this connection the voltage across pressure coil will be supply voltage even if the variac is in minimum position. CONNECTION Connect a single phase supply through a single phase variac. Connect the currect coil of wattmeter M and energy meter c1 and an ammeter in series to phase terminal of singlephase variac. The pressure coil of both wattmeter and energymeter should be shorted and connected to phase of supply (not to the variac). The terminal V of wattmeter and p2, c2 of energy meter should be connected to neutral terminal of variac. PROCEDURE Keeping the variac in minimum position and switch on supply. Adjust the variac to get different reading in ammeter and note the time for 5 Revolution of energy meter disc and obtain the wattmeter reading. FORMULAE %error = (R.E - A.E)*100/A.E , WHERE, R.E is the recorded energy = n/N (n=5 & N=energymeter const.) A.E is the actual energy A.E= (wattmeter reading*time)/(3600*1000) while plotting a error graph it will be having a zig-zag shape. Normally the error can be upto 10%
How do you calibrate single phase energy meter by phantom loading?
The phantom loading is that no external load is connected in actual sense and the current and pressure coils are connected seperatly so that it will consume only less power. In this connection the voltage across pressure coil will be supply voltage even if the variac is in minimum position. CONNECTION Connect a single phase supply through a single phase variac. Connect the currect coil of wattmeter M and energy meter c1 and an ammeter in series to phase terminal of singlephase variac. The pressure coil of both wattmeter and energymeter should be shorted and connected to phase of supply (not to the variac). The terminal V of wattmeter and p2, c2 of energy meter should be connected to neutral terminal of variac. PROCEDURE Keeping the variac in minimum position and switch on supply. Adjust the variac to get different reading in ammeter and note the time for 5 Revolution of energy meter disc and obtain the wattmeter reading. FORMULAE %error = (R.E - A.E)*100/A.E , WHERE, R.E is the recorded energy = n/N (n=5 & N=energymeter const.) A.E is the actual energy A.E= (wattmeter reading*time)/(3600*1000) while plotting a error graph it will be having a zig-zag shape. Normally the error can be upto 10%. Winston Netto SSET-SCMS Engineering college.
How can you convert electronic energy to electrical energy?
If, by electronic energy, you mean electrons then you don't convert it- that's what it is. Electricity is the flow of electrons from a negative terminal to a positive. In a wire it is delocalised electrons which are free to move
How does electricity flow around a series circuit?
Imagine a series circuit consisting of a battery, a wire from its negative terminal to a lamp, and another wire from its positive terminal to the lamp. The electricity would flow from the battery's negative terminal to the lamp and then back to the positive terminal of the battery: it's always negative to positive. Scientists were not aware of this until long after electricity discovered. They thought electricity flows from positive to negative and this was accepted for a long time. When someone asks you to use conventional current, it means assume the current flows from positive to negative, which is the opposite of what happens in reality. The negative terminal (the technical name for this is cathode) of an electrical energy supply, such as a battery, releases electrons with energy in them. These electrons drift to the appliance (i.e. the lamp in this case). The lamp then uses the energy in the electrons to produce light and heat before letting the electrons out on the other side. These electrons have little or no energy but they would drift back to the battery to regain energy and the cycle continues until the battery is depleted of energy. The electrons leave the lamp at the speed at which they enter the lamp.
What you need to make a circuit?
To establish an electric current, there are two requirements that must be met. There must be a closed conducting path that goes from the positive terminal to the negative terminal. The second requirement is to have an electric circuit for the energy to move a positive test charge against the electric field.
How a battery produces an electric charge?
A battery works by converting chemical energy into an electrical charge. Electrolytes let ions move between the positive terminal and the negative terminal, which makes the electrical current flow.
