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How galvanometer measure the exact voltage with series high resistor?
Assuming galvanometer has zero or negligible internal resistance. If u connect resistor R>>RL(Load resistance) and connect it parallel to RL, it will hardly cause any change in voltage across load resistance. Suppose small current Ig goes through galvanometer. Since galvanometer have zero internal resistance, Voltage across RL = Voltage across R = IgR
What is the value of internal impedance of ideal current source?
internal resistance is always infinite in ideal current source .the internal resistance is in shunt with current source
Does the ideal voltage source have an internal resistance of zero ohms?
yes
How can you convert galvanometer into ammeter?
Since Galvanometer is a very sensitive instrument therefore it can't measure heavy currents. In order to convert a Galvanometer into an Ammeter, a very low resistance known as "shunt" resistance is connected in parallel to Galvanometer. Value of shunt is so adjusted that most of the current passes through the shunt. In this way a Galvanometer is converted into Ammeter and can measure heavy currents without fully deflected.
An ideal powersupply has?
Zero out impedance and infinite internal resistance. - Divya Naveenan
How galvanometer measure the exact voltage with series high resistor?
Assuming galvanometer has zero or negligible internal resistance. If u connect resistor R>>RL(Load resistance) and connect it parallel to RL, it will hardly cause any change in voltage across load resistance. Suppose small current Ig goes through galvanometer. Since galvanometer have zero internal resistance, Voltage across RL = Voltage across R = IgR
What is resistance of an ideal ammeter?
ideal ammeter has zero internal resistance
Why internal resistance of galvanometer not important in measurements?
The internal resistance of a galvanometer is typically not important in measurements because it is designed to have a high resistance compared to the circuit it is measuring. This ensures that it draws minimal current, thereby not significantly affecting the voltage or current in the circuit being tested. Additionally, when used in conjunction with appropriate shunt resistors, the galvanometer can provide accurate readings without the influence of its own resistance.
What is the value of internal impedance of ideal current source?
internal resistance is always infinite in ideal current source .the internal resistance is in shunt with current source
Why shunt resistance is used ammeter?
A shunt resistance is a low resistance connected parallel to the galvanometer so that a large portion of current passes through the low resistance and a small fraction of current passes through the galvanometer this saves the galvanometer from damage
How do you convert galvanometer to ohmmeter?
Ohms are the unit of measurement for resistance, so an ohmmeter is a device that measures electrical resistance. A galvanometer measures the current flowing through the resistance, so the two are related. To convert a galvanometer into an ohmmeter, one needs an external battery.
How you convert galvanometer into ammeter in detail?
By attaching a resistance in parallel connection with the galvanometer. Or when a low resistor connected in parallel with galvanometer ,the galvanometer is converted in ammeter. and the resistor is called shunt resistance.
Why internal resistance of an ideal voltage source is zero and an ideal current source is infinty?
Ideal sources do not exist in reality, they are simply theoretical entities to aid in the process of circuit analysis and design. In actual usage they are used as parts of models of real sources.In a first approximation of a real source we must add internal resistance to the ideal source (at higher levels of approximation other things like parasitic reactances must be added to, but internal resistance is good enough for the first approximation):on a voltage source the internal resistance is added in series with the ideal source to drop some of the voltageon a current source the internal resistance is added in parallel with the ideal source to bypass some of the currentNow the source resistance as seen by the load (yes, that may sound like a strange concept but it is correct) mustequal the internal resistance of the source. To find the resistance of the ideal sources themselves we must analyze the resulting series and parallel circuits so that they meet these criteria: in the series circuit of the real voltage source the sum of the internal resistance and the resistance of the ideal voltage source must be equal to the internal resistance. therefore the resistance of the ideal voltage source must be zero.in the parallel circuit of the real current source the internal resistance in parallel with the resistance of the ideal current source must equal the internal resistance. if the resistance of the ideal current source had any finite value then the resistance of the internal resistance in parallel with the resistance of the ideal current source would be less than the internal resistance. therefore the resistance of the ideal current source must be infinite.
Does the ideal voltage source have an internal resistance of zero ohms?
yes
An ideal powersupply has?
Zero out impedance and infinite internal resistance. - Divya Naveenan
How can you convert galvanometer into ammeter?
Since Galvanometer is a very sensitive instrument therefore it can't measure heavy currents. In order to convert a Galvanometer into an Ammeter, a very low resistance known as "shunt" resistance is connected in parallel to Galvanometer. Value of shunt is so adjusted that most of the current passes through the shunt. In this way a Galvanometer is converted into Ammeter and can measure heavy currents without fully deflected.
What kind of meter is created when is shunt is added to a galvanometer?
A galvanometer with a low resistance shunt in parallel makes an ammeter.
