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Is it true that for the same resistance the greater the voltage the greater the current?
true
What has the greater current in the diodes bridge rectifier circuit or full-wave rectifier circuit?
They both have the same current.
What is overload current?
A current greater than which a circuit is designed to carry , may melt wires or damage elements of the circuit.This is known as overloading of current.
Why line current is greater than phase current in delta connection?
Because if you apply Kirchhoff's Current Law to the junction between the line current and the two phase currents, the line current is the phasor (vector) sum of two phase currents. For a balanced load (only), this works out to 1.732 x phase current.
What is the Primary function of a voltage follower circuit?
Its purpose is to provide approximately the same voltage to a load as what is input to the amplifier, but at a much greater current. In other words, it has no voltage gain, but it does have current gain.
What item uses millimeter?
Millimetres are used on many measuring devices for greater accuracy.
What measuring tool would you used to measure a diameter of a quarter?
You could use a simple ruler, or a micrometer for greater accuracy.
Why current a fundamental quantity though it is flow of charge per unit time?
Ampere = Coloumb / second is the same as saying that Coloumb = Ampere x second. Any of the two electrical units can be derived from the other one. Ampere is NOT a "fundamental quantity"; it is an SI base unit. The base units are not necessarily those that are somehow considered more "fundamental" than others; instead, the base units are those that can be measured with a great accuracy. In the case of current vs. charge, it seems that measuring a current can be done with greater accuracy than measuring a charge directly; therefore, the current is the base unit, and the current is derived. However, this doesn't make current any more "fundamental" than charge.
Does the level of accuracy obtained from using a vernier caliper different from other measuring tool?
It is less than a micrometer but greater than a non vernier caliper or ruler.
Does the level of accuracy obtained from using a vernier caliper differ from other measuring tools?
It is less than a micrometer but greater than a non vernier caliper or ruler.
What is voltmeter sensitivity?
Voltmeters are connected in parallel with the components whose voltage or voltage drop you want to measure. That means that the internal voltmeter's resistance will create a new branch in parallel with the component, thus increasing the current in the circuit. If there are other components in series with the component to which the voltmeter is connected, this increment of current will increase the voltage drop across them, reducing the voltage drop across the component whose voltage is being measured. This is obviously an induced error in the measurement, which adds up to other errors built into the voltmeter (accuracy, resolution, linearity, parallax, etc.) When measuring the output voltage of low resistance (high current) power supplies, the input impedance is usually not an issue. However, when measuring a low current power supply, the input resistance of the voltmeter will have to be at least 10 times the internal resistance of the power supply. Otherwise, the error will be too noticeable. Therefore, the ideal voltmeter should have an infinite internal resistance. Since this is not the case, it should at least have several megohms. Analog voltmeters usually have s sensitivity of 20 to 30 kilohm per volt (kΩ/V), which varies withe the voltmeter range setting. Digital voltmeters, instead, have constant high (>20 megohms) input impedance, which is a combination of pure resistance and reactance, usually capacitive, regardless of the voltage range. That is why the specs of a digital voltmeter always indicate the input capacitance.
Current and voltage readings taken on the far right of a meters scale provide greater?
Current and voltage readings taken on the far right of a meter's scale provide greater inaccuracy that readings taken from mid scale on the meter.
What dimension needs to be more precise in calculating the volume of a cylinder?
An error in measuring the radius (or diameter) of the cylinder has a greater effect on the accuracy of the volume calculation than an error in measuring the cylinder's length, since the volume is proportional to the square of the radius.
What is more accurate in measuring the density of an object the vernier caliper or the micrometer caliper?
The micrometer caliper is generally more accurate in measuring the density of an object compared to the vernier caliper. This is because the micrometer caliper has a higher precision and can measure with greater accuracy, typically up to 0.01mm.
Why do you use two different instruments for measuring?
Different instruments may be used for measuring to provide greater accuracy, cover a wider range of values, or measure different aspects of a quantity. Each instrument may have its strengths and limitations, so using multiple instruments can help ensure more comprehensive and precise measurements.
How can you measure your height with greater accuracy and precision?
To measure your height with greater accuracy and precision, use a wall-mounted stadiometer rather than a tape measure on the floor. Make sure to stand up straight with your back against the wall and look straight ahead without tilting your head. Take multiple measurements and calculate the average for a more precise result.
How do you convert voltmeter into ammeter?
To convert a voltmeter into an ammeter, you need to connect a low resistance in parallel with the voltmeter. This resistor will allow the voltmeter to measure the voltage drop across it, effectively converting the voltmeter into an ammeter. The resistance value of the resistor should be calculated based on the desired current range of the ammeter.
