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What is the level of drain current ID for gate-to-source voltages VGS less than more negative than the pinch-off level?
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Does current always go from positive to negative?
We call this Conventional Current Flow, where imaginary positively charged particles are repelled away from a positive charge and attracted towards a negative charge.The reality is that electrons are actually flowing through the conductor. Electrons are negatively charged particles and flow from negative to positive. It's just easier to think of a positive current flowing than a negative current.
The indication of the negative or positive pole of an electric current is?
Electrode
What current has a negative sign and what does it indicate?
Electrical current in copper is the flow of electrons which are negaitve charge particles. In a typical battery, electrons flow from the negative (bottom) side to the positive (top, nipple) side. However, the engineering convention is to call the "plus" side of the battery the source so current is said to flow from the plus side to the negative side -- which is the opposite to the physical flow of electrons.
Why voltage have negative sign?
The strength of a electrical flow is measured in Voltage and Electrons are negative. Alternating current (AC) oscillates between positive and negative as the direction of flow periodically reverses direction. An alternating current of 60Hz therefore changes direction 60 times a second, and can be visualised as a sine wave that oscillates above and below the zero baseline, with a period (a complete cycle) of 1/60th of a second. Direct current (DC) infers constant polarity, meaning the direction of flow is unidirectional (one direction only). While DC can oscillate as a full-wave rectification or a half-wave rectification, it is always indicated as a positive voltage (the line or wave is always above the zero baseline). A voltage or current indicated with a negative symbol therefore implies alternating current although AC is more correctly indicated by the ± symbol. Direct current is generally indicated by a long horizontal bar above three short horizontal bars.
What is the function of grid?
it accelerate the motion of electron emitted by the filament if given a positive charge, similarly if negative voltage to grid the current flow through the grid is reduced. the more positive grid shows less current.
What is over frequency?
when the current increases in voltages.
What is the meaning of voltages?
D.C. stands for direct current. A.C. is alternating current.
Do voltages vary around the circuit and why?
A: Voltages varies on a circuit because current varies caused by difference in resistance
Which is more dangerous AC current or DC current when the voltages are equal?
either one, neither one
Can current be negative?
A negative current only signifies direction.
Why you use resisters in circuits?
To adjust/control/set voltages and/or restrict current.
Why you use resisters in your circuit?
To adjust/control/set voltages and/or restrict current.
What is the basic difference between dc current and ac current?
DC (direct current) flows in one direction only, while AC (alternating current) changes direction periodically. DC is commonly used in batteries and electronic circuits, while AC is used in household electrical systems because it can easily be converted to different voltages using transformers.
What is scherbius drive?
Static scherbius drives are capable of bi-directional power flow, with both positive and negative injected voltages possible, in phase with or opposing the rotor current. As a result, a wider set of operating conditions is possible.
What device is used to change the scale values of an AC ammeter?
A multimeter is used in which there is options for multirange measurement of Ac current or voltages and resistances and also DC voltages
How do you add voltages?
A: pay attention to current flow and assign +/-using algebraic mathematics
What are the 3 phases of conditioning?
Three phases conditions are: 1. there should be three wires for carrying current and voltage. 2. the current and voltages should be sinusoidal in nature i.e A.C voltages or currents. 3. phase angle should be 120 degree apart for each line voltages or current. Suppose voltage of the first line is given by: Va= Vsin(phi) Then second and third line voltages will be: Vb=Vsin(120-(phi)) and Vc=Vsin(240-(phi)) where (phi) is the phase angle and V is the supply voltages which has same magnitude in all the three phases.
