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In a word - yes.
add There are valves in the heart and in the veins, and in addition there are tiny structures precapillary sphincters, which control the flow from the arteriole (little artery) to the capillaries which then become venules (tiny veins).
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What direction does current flown an ac circuit?
We have suppose the current flow in opposite to the direction of flow of electron.AnswerA.C. current reverses direction every half-cycle.
What is the direction of current due to flow of electrons if it is not conventional current?
Electron flow is from negative to positive. Conventional current flow is from positive to negative.
What is a current consisting of charges that flow only in one direction called?
A Direct Current or DC direct current is a current consisting of charges that flow only in one direction.
What is the direction of electrical current flow?
Negative to positive.
A flow of electrons in a definite direction is called?
Current. Direct Current (D.C) if it is steady. Alternating Current (A. C) changes direction at a constant rate. The frequency for North American AC current from the power grid is 60 Hz, or 60 cycles per second. This would result in the direction of current changing 120 times per second.
Can a resistance be used in the circuit instead of diode?
No. A resister is not a replacement component for a diode. A resister is passive and allows current to flow through in in both directions. A diode is a single semiconductor junction that only allow current to flow in one direction.
Why cannot the B-field of an infinitely long straight current-carrying conductor have a component in the direction of the current?
As induced magnetic lines exist in a plane perpendicular to the direction of flow of current, the component in the direction of current i.e cos 90 component will be zero. Recall cos 90 = 0. Hence the answer
What is the main difference in operation between diodes and resistors?
A diode is an electronic component which only allows the current to pass through it in one direction. This is useful in many aplications, such as preventing current to flow in the wrong direction in a circuit. A resistor is also an electronic component, but instead of preventing the current from moving in a certain direction the resistor creates an electrical resistance which will effect the current passing through it. The larger the resistance of the resistor, which is measured in Ohm, the greater the effect it will have on the current.
How current are made?
You cause the current to flow through an electronic device that allows current to flow in one directionbut not in the other direction. Such a device is called a "diode" or a "rectifier".
Why diode is called mechanical valve?
A valve allows flow in only one direction. Diodes allow electrical current to flow in one direction only.
An electronic device that limits the amount of current that can flow through it?
Not in normal circumstances. A diode is an electonic device that allows current to flow freely in only one direction.
Can a diode work in ac?
A diode is a "one-way valve" that allows electrical current to flow in only one direction. A diode placed in series between an AC voltage source and a resistive load will allow current to flow through the load in one direction and block the current when the polarity of the AC voltage changes.
When the flow of a current is aways in one direction?
When the flow of current is aways in one direction it is known as direct current.
What is breakdown in diodes?
a break down diode is a diode that allows current to flow freely in one direction but not in the other the difference between it and a standard diode is that it is a semiconductor in the direction that current doesn't flow freely in current only flows in this side when the voltage reaches a set point and the resistance then breaks-down and allows the current to flow it is useful where the circuit might require low voltage protection
What is breakdown diode?
a break down diode is a diode that allows current to flow freely in one direction but not in the other the difference between it and a standard diode is that it is a semiconductor in the direction that current doesn't flow freely in current only flows in this side when the voltage reaches a set point and the resistance then breaks-down and allows the current to flow it is useful where the circuit might require low voltage protection
What is a semiconductor device that allows electricity to flow in only one direction?
A "diode" will allow current to pass thru it in only one direction, provided you don't overload it.
Why diode don't allow the current coming in opposite direction?
Diode is known as a rectifier because it only allows the current to flow in one direction. Diode is only effective when the input is AC.
