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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 theory states the current flows from the most positive point to the most negative?
The theory that states current flows from the most positive point to the most negative point is known as conventional current flow. This convention assumes that electric current consists of positive charge carriers moving from the positive terminal of a voltage source to the negative terminal. Although in reality, electrons (negative charge carriers) move in the opposite direction, conventional current flow remains a standard for electrical engineering and circuit analysis.
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.
Does an ammeter have a positive and negative terminal?
Yes, an ammeter typically has positive and negative terminals, which are used to indicate the direction of current flow. When connecting an ammeter in a circuit, the positive terminal should be connected to the more positive point in the circuit, while the negative terminal should be connected to the more negative point. This ensures accurate readings of the current flowing through the circuit. However, some ammeters can measure current in either direction without damage, depending on their design.
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 your circuit?
To adjust/control/set voltages and/or restrict current.
Why you use resisters in circuits?
To adjust/control/set voltages and/or restrict current.
How do you add voltages?
A: pay attention to current flow and assign +/-using algebraic mathematics
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
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 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.
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.
