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What is one different between a galvanometer and an electric motor?
Well, darling, a galvanometer is a device used to detect and measure small electric currents, while an electric motor is a device that converts electrical energy into mechanical energy to produce motion. So, in simpler terms, one tells you how much juice is flowing, and the other one actually does the heavy lifting. Hope that clears things up for you, sugar!
What is a galvanometer?
a device designed to measure small electric currents; the simplest electric meterA galvanometer is an instrument for detecting and measuring small electric currents.Or use this long answer: galvanometer , instrument used to determine the presence, direction, and strength of an electric current in a conductor. All galvanometers are based upon the discovery by Hans C. Oersted that a magnetic needle is deflected by the presence of an electric current in a nearby conductor. When an electric current is passing through the conductor, the magnetic needle tends to turn at right angles to the conductor so that its direction is parallel to the lines of induction around the conductor and its north pole points in the direction in which these lines of induction flow. In general, the extent to which the needle turns is dependent upon the strength of the current. In the first galvanometers, a freely turning magnetic needle was hung in a coil of wire; in later versions the magnet was fixed and the coil made movable. Modern galvanometers are of this movable-coil type and are called d'Arsonval galvanometers (after Arsène d'Arsonval, a French physicist). If a pointer is attached to the moving coil so that it passes over a suitably calibrated scale, the galvanometer can be used to measure quantitatively the current passing through it. Such calibrated galvanometers are used in many electrical measuring devices. The DC ammeter , an instrument for measuring direct current, often consists of a calibrated galvanometer through which the current to be measured is made to pass. Since heavy currents would damage the galvanometer, a bypass, or shunt, is provided so that only a certain known percentage of the current passes through the galvanometer. By measuring the known percentage of the current, one arrives at the total current. The DC voltmeter , which can measure direct voltage, consists of a calibrated galvanometer connected in series with a high resistance. To measure the voltage between two points, one connects the voltmeter between them. The current through the galvanometer (and hence the pointer reading) is then proportional to the voltage.
What is the difference between ammeters and amp meters?
An Ammeter connects a low impedance on the test points, so the equivalent of that is a "short circuit" between the test points. This is done to avoid a drop of current on the tested circuit. A Voltmeter connects a high impedance on the test points, so the equivalent of that is a "open circuit" between the test points. This is done to avoid a drop of voltage on the tested circuit. --------- In terms of external connections Ammeter (used to measure current) is connected in series of the circuit (through which the current flow need to be measured) and voltmeter (used to measure voltage) is connected in parallel to points in circuit (across which voltage needs to be measured).
Difference between voltage and emf?
'Voltage' is simply another term for 'potential difference', and an electromotive force is the open-circuit, or no-load, potential difference of a source such as a battery or generator.
How are voltages imported into installations through the supply neutral conductor?
A 'voltage' is another name for a potential difference. As the name implies, a potential difference exists between two different points or, in the case of an electrical installation, between the line conductor and the neutral conductor. So the neutral does not 'import voltages'. Voltages exist between the line (hot) conductor and the neutral conductor.
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
What is the difference between the construction of a moving coil galvanometer and a ballistic galvanometer?
What is the basis of the function of a galvanometer?
The function of a galvanometer is based on the interaction between a magnetic field and an electric current passing through a coil of wire. When a current flows through the coil, it creates a magnetic field that interacts with a permanent magnet, causing a deflection of the needle on the galvanometer scale.
A student claims that the thermometers are useless because a thermometer always registers its own temperature. how would you respond?
It is true that thermometers always registers its own temperature.When thermometers are in contact with a respective body heat is exchanged between the thermometer and the body.After some time they are in equilibrium state.As both of their temperature are now the same, temperature of thermometer is registered equal to that of the body as a result.
What is the difference between ballistic and a deadbeat galvanometer?
A ballistic galvanometer measures charge by letting current flow through a coil and measuring the extent of its deflection. A deadbeat galvanometer is designed to quickly dampen the coil's movement to minimize oscillations, making it more suitable for accurately measuring steady currents.
What is the difference between a galvanometer and an ammeter?
A galvanometer is a device used to detect small electric currents, while an ammeter is a device used to measure the strength of electric currents. The main difference is that a galvanometer is more sensitive and used for detecting small currents, while an ammeter is used for measuring larger currents.
What are the differences between new and old cash registers?
age
What are the function of registers in microcomputer system?
The function of registers is the same in all computers. They are the fundamental binary interface between the internal and external structure of the CPU. All binary transactions between the CPU and its peripherals pass through registers. From the inside, they are the final periphery to the pins.
Why two coils are used in helmholtz galvanometer?
Two coils are used in Helmholtz galvanometer to provide a more uniform magnetic field between them. This helps in achieving better sensitivity and accuracy in measuring small currents. The two coils generate a magnetic field that stabilizes and enhances the galvanometer's performance.
What do Hans Christian Oersted's experiments have to do with a galvanometer?
Hans Christian Oersted studied and experimented on the field of electromagnetism.Electromagnetism is the interaction between electricity and magnetism. From his experiments, Oersted concluded that an electric current produces a magnetic field. The galvanometer measures electric currents and magnetism. (So basically he was the very first person to come up with the idea of a galvanometer.) Hope this helped........
What is differences between ballistic galvonometer and dead beat galvanometer?
A ballistic galvanometer measures total charge passed through the coil while the deadbeat galvanometer indicates steady state current. Ballistic galvanometers are faster but less accurate due to damping, while deadbeat galvanometers have a faster response time and are more accurate for measuring constant currents.
How do you convert galvanometer to an ohmmeter?
"An ohmmeter is an electrical instrument that measures electrical resistance, the opposition to an electric current."The unit of measurement for resistance is ohms (Ω).It is useful device for rapid measurement of resistance. It is consist of galvanometer and adjustable resistance Rs of known value and a cell connected in series. The resistance R to be measured is connected between the terminals.The series resistance Rs is so adjusted that when the terminals are short circuited i.e., when R = 0, the galvanometer gives full scale deflection. So the extreme graduation of the usual scale the galvanometer is marked 0 for resistance measurement. When terminals are not joined no current passes through the galvanometer and its deflection will be zero . Thus zero of the scale marked as infinity. . When R is not infinite , the galvanometer deflects to some intermediate point depending on the value of R scale can be calibrated to read the resistance directly.
What is ballistic galvanometer.Give the construction and theory of moving coil ballistic galvanometer.?
a ballistic galvanometer is a specially designed galvanometer suitable for measuring the total quantity of electricity or charge displaced by a varying current of short duration such as charging & discharging of a capacitor >>>>
