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How long does current flow in one direction when 60hertz(60cycle)current is used?
Skoolaz
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Will current flow more easily through a long wire or a short wire?
don't know that's why i need help
Does a short thick metal wire or a long narrow metal wire have more resistance?
yes, Easy of flow of current increases with increase of area of cross section.
Is it true that an electric current releases energy in one quick burst?
No, an electric current does not release energy in one quick burst. The release of energy from an electric current is continuous as long as there is a flow of electrons through a circuit. This allows for consistent and sustained delivery of electrical power.
How can you make an electromagnet stronger and why?
An electromagnet will maintain a charge as long as current continues to flow through it. Strengthening the charge is a matter of changing, or adjusting the components that enable the charge to flow. There are many ingredients that affect electromagnet strength. The length and width of the magnetic field, the amount of resistance the current encounters, the pulling power of the magnet itself, all determine how strong your electromagnet will be.
Is air insulator or a conductor?
Air is generally thought of as an insulator. As long as air is dry, it will not support electric current flow unless voltage is very high. We see high voltages in power lines with air between them, and they don't generally arc, even if it's raining. Air atoms and molecules don't have free electrons to support current flow. That makes air a pretty good insulator.
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
How you can indicate the current direction in the network?
If we go for the diagramatic representation then battery positive is represented by the long terminal and battery negative is represented by the short terminal then the direction of the current is given by an arrow from positive terminal to negative terminal (Therotically electrons flow from negative to positive but we represent current flow from positive to negative. This is the sign convention )
Do electrons get emptied in a connection with switch opened given a dc supply?
No, the electrons just starts flowing across the closed circuit, in the direction opposite to the flow of currentIt is confusing to say that 'electrons flow in the opposite direction to current' because, in metal conductors, current is a flow of electrons! 'Conventional flow', which is being referred to, here, is simply a convention and doesn't represent real current flow. Considering how long we have known about electrons, it's really about time we abandoned 'conventional flow'.
Current will flow as long as the power supply is good and there's a power-control device true or false?
Current will flow as long as there is a difference of potential (a voltage) and a path for current to flow. So no power-control device is required for current flow but yes it will flow with a power control decive.
What happened to electron under ac voltage and dc voltage?
when electrons flow under AC they flow in both direction firstly forward then in reverse and it does this for as long as there is a potential difference applied to the circuit. under DC the current only flows in one direction only
When an electric current flows through a long conductor how does each free electron moves?
The individual electrons will move back and forth, as they do when there is no current. You would have to do very careful statistics to notice that there are slightly more electrons moving in one direction than in the other: the drift velocity (average velocity due to current) of the electrons is typically a fraction of a millimeter per second.
How long 5 voltage travel in steel?
As long as there is an applied voltage, current will flow.
In the direction of current?
Current flows from positive to negative.Electrons flow from negative to positive.This is historic, and arbitrary.Another AnswerThe original answer is not wholly correct, and neither is it correct to say that the direction of an electric current is 'arbitrary'. Current direction is defined in terms of its direction through a load (never through the voltage source, such as a battery or generator).An electric current is a flow of charged particles. In metal conductors, these arenegatively-charged electrons. Therefore, in metal conductors, current flows from negative to positive through a load. This is because the negative electrons in a conductor are repelled by an external negative charge and attracted towards an external positive (or 'less negative') charge.In the 18th century, long before the nature of the atom was understood, scientists, such as Benjamin Franklin believed that an electric current was the flow of some mysterious 'fluid' that moved from a higher pressure to a lower pressure. Naturally, the considered the higher pressure to be 'positive' and the lower pressure to be 'negative'. Therefore, they believed current flowed from 'positive to negative'. Faraday agreed with this direction, based on his observations of his experiments in electrolysis (although he thought that current was a 'field' rather than a 'fluid'). Unfortunately, they were wrong.To distinguish the latter from the former, a direction of positive to negative is termed 'conventional flow', whereas a direction of negative to positive is termed 'electron flow'. Modern textbooks use either 'conventional flow' or 'electron flow', depending on the author's preference.
Why conventional current is in the same direction of hole?
Because the actual charge carriers are electrons, which carry negative charge.So any positive charge is actually the absence of electrons where they're expectedto be, referred to as "holes", and conventional current is the flow of positive charge.Answer'Conventional current' is simply an assumed direction. It is NOT considered to be a 'flow of positive charge' -in fact, conventional flow direction is based on the mistaken assumption (by Benjamin Franklin and others) that current was a mysterious 'fluid' (not charge) that moved from a higher (positive) pressure to a lower (negative pressure). In other words, it was established long before 'positive charges' were discovered!!'Holes', of course, don't exist. They're simply a 'model' used to explain the behaviour of semiconductors. As the original answer points out, holes are simply locations normally occupied by electrons. Relative to electron flow, holes 'move backwards' -in much the same way as the scenery appears to be moving backwards when you sit in a train -the scenery isn't moving backwards at all, of course, you are moving forward!So in that sense, conventional current direction (not 'flow') and hole direction are the same.
What device is needed for current to flow in an electric circuit?
Too vague of a question. As long as it is a closed circuit it will flow.
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 happens to the force generated by the circular coil of Relay if current direction is reversed?
As long as the amperage stays the same, the force in the relay stays the same regardless of direction of the current.
