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You can use a multi-meter to measure resistance. The specific portion of the meter for measuring resistance is called an ohmmeter.
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State 3 functions of wheatstone bridge?
Wheatstone bridge is used to calculate the resistance of unknown resistor in the circuit.
What is the meaning of resistor?
Resistors are one of the three basic electronic components. They restrict the flow of current in an electrical circuit. Fixed resistors have a fixed value of resistance, and are used in almost every electronic circuit for lots of different reasons.
The dimmer switch in a lighting circuit controls the brightness of one or more lamps by varying the resistance in the circuit what schematic symbol could be used to represent this device?
Use the standard resistor symbol and then place an arrow across the resistor. The bottom of the arrow midpoint of the resistor and just below, the tip of the arrow (draw with an arrow head) just above the resistor. This represents the wiper of the variable resistor.
Why is AC meggering not used?
You do not use AC to megger a device, because the purpose of meggering is to measure the insulation resistance of the device. You use DC to do that. If you used AC, you would be unable to differentiate between insulation leakage and capacitance.
Is shunt a bypass resistance?
It is the resistance across the cell to invoke a constant draw. This makes the cell work efficiently under ideal conditions. To do it properly new cell management systems measure the temp. and voltage output and put a load on the cell that makes it work best.
How will you differ a resistor and resistance?
resistance is the hindrance caused to some flow be it flow of liquids,flow of positive charges etc. whereas resistor is the device used to vary the resistance of the electric circuit
State 3 functions of wheatstone bridge?
Wheatstone bridge is used to calculate the resistance of unknown resistor in the circuit.
What are devises run by electrical energy represented as resistors in a circuit?
Do not confuse 'resistance' with 'resistor'. 'Resistance' is a quantity, wheras a 'resistor' is a circuit component. In schematic diagrams, the 'rectangular' (European) or 'zig-zag' (US) circuit symbol represents resistance, not a resistor. The circuit symbol, therefore, is used to represent anyresistive device.
What do you call a variable resistor that is set up to alter the size of the current in a circuit?
A thermister is a device that changes resistance depending on temperature. A photo resistor changes resistance based on light. Both of these could be used with an amplifying circuit to vary current flow.
What is resistor used for?
A Resistor Is Used To Limit The Current In A CircuitFurther AnswerA resistor is sometimes used to modify the natural resistance of a circuit -e.g. by adding a resistor in series, you can increase the natural resistance; by adding a resistor in parallel, you can decrease the natural resistance. Two or more resistors can be used to create a voltage divider -a method of obtaining a voltage lower than the supply voltage in a d.c. circuit.Use of resistor is to produce a particular amount of resistance to the flow of current
What is a resistor for?
A Resistor Is Used To Limit The Current In A CircuitFurther AnswerA resistor is sometimes used to modify the natural resistance of a circuit -e.g. by adding a resistor in series, you can increase the natural resistance; by adding a resistor in parallel, you can decrease the natural resistance. Two or more resistors can be used to create a voltage divider -a method of obtaining a voltage lower than the supply voltage in a d.c. circuit.Use of resistor is to produce a particular amount of resistance to the flow of current
What is the meaning of resistor?
Resistors are one of the three basic electronic components. They restrict the flow of current in an electrical circuit. Fixed resistors have a fixed value of resistance, and are used in almost every electronic circuit for lots of different reasons.
What does a pre-set resistor do in a circuit?
A preset resistor is used in some circuits to change the resistance. The preset resistor enables the circuit to be more or less sensitive thereby altering the resistance.
Resistance thermometer purpose of the device?
they are devices used to measure the temperature, applying the temperature to RTD element. they are sensory devices.
How is an multimeter connected to take a measure?
Multimetres are generaly used to measure the following quantities. Voltage: multimeter is connected in parallel with the Load; Current: multimeter is connected in series with Load; Resistance: the resistor must be taken out of the circuit first, then, the probes from the multimeter are connected across the resistor,
What is veritable resistor?
Variable resistor is a passive component where we can vary its resistance simply by rotating it's head .These resistors are available from few ohm to several mega ohm. and are used for regulator or gain control in amplifier circuits. It is three terminal device.
A measure of the flow of blood in atries is called?
Blood pressure refers to the blood flow and resistance in the arteries. The device used to measure blood pressure is the sphygmomanometer or sphygmometer.
