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If electrons in AC reverse their direction 3 to 4 times a second then how does the current travel?
Wiki User
∙ 14y ago
The direction is not reversed. Their is a phase change that occurs.
Think of a sine wave moving past a given point. at one point in time, the wave is at a peak, then crosses through zero and then reaches a peak that is 180 degrees out of phase before crossing zero again.
Wiki User
∙ 14y ago
In an AC circuit, the current flows in one direction and then reverses periodically. The change in direction of the current does not affect the overall flow of electric charge. The alternating direction of the current allows power to be transmitted efficiently over long distances and is commonly used in household electricity supply.
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If an atom has 7 electrons how many electrons are located in the second energy level?
An atom with seven electrons will have five electrons in the second energy level.
How many electrons are in magnesium's second energy level?
In the second energy level of an atom, there can be a maximum of 8 electrons. Magnesium has 12 electrons in total, with 2 electrons in the first energy level and 8 electrons in the second energy level.
What is the name for the flow of electrons in an electric circuit?
A flow of electrons in an electrical circuit is called a current, which is the name given to the amount of electrical charge flowing in a certain period of time.Any total quantity of electrical charge is measured in coulombs.Any flow of electrical current is measured in amps.1 amp is equal to a flow of 1 coulomb of electrical charge in one second of time.
How many electrons does carbon have on its second shell?
4 electrons
An atom that has 3 electrons in its second shell and a filled first shell will?
lose 3 electrons from its second shell
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.
How do you make ac current flow in only one direction?
No, they reverse their direction twice in every cycle, so with 50 Hz ac the electrons reverse 100 times every second. They don't have to move very far, because when a dc current flows in a wire the electrons might only move at 1 inch per second.
What is the difference between altenating current and direct current?
The current (or electrons if you will {but thought of as flowing in the opposite direction} in a DC circuit flows only in one direction. In an AC circuit the current periodically flows in the opposite direction (in the US this usually happens 120 times a second, so 60 cycles per second.)
Steady flow of electrons?
elelctric current
How do electrons flow on an ac source?
With electricity from the mains, the current chages direction 50 times each second, so it is called alternating current.
What is an electric current that periodically changes direction?
An electric current that periodically changes direction is called an alternating current (AC). In AC circuits, the flow of electric charge reverses direction many times per second, typically at a frequency of either 50 or 60 Hz. This is in contrast to a direct current (DC) in which the flow of electric charge remains constant in one direction.
How do the electrons move through the positive and the negative terminal in a light bulb?
Electrons move across the terminals of a filament in a light bulb in one direction for 1/120th of a second, and they move in the opposite direction for the next 1/120th of a second. Yes, electrons through a light bulb flip direction 120 times every second.
Why direction of rotation is not reversed when both field and armature terminals are reversed?
The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!
Why direction of rotation is not reversed when both field and armature terminal are reversed?
The direction of the force that drives the machine is determined by the relative directions of the field and the armature current. By reversing the direction of both field and the armature current, the direction of the resulting force stays the same; you have to reverse the direction of one or the other; not both! Prove it for yourself, by applying Fleming's Left-Hand Rule (for conventional current flow); reverse the direction of both your first finger (field) and your second finger (armature current), and you thumb (direction of motion) will end up pointing in the same direction!
In which circuit does charge reverse direction many times per second?
In an alternating current (AC) circuit, the electric charge periodically reverses direction at a certain frequency. This is in contrast to a direct current (DC) circuit, in which charge flows in one direction only.
Definition of forward resistance of diode?
The forward resistance of a diode is, by Ohm's law, the voltage across the diode divided by the current through the diode. Note that, since diodes are non linear, the effective resistance is not constant over all possible voltages and currents.
What is current direction?
Outside the battery, it is negative to positive and inside the battery it is positive to negative.
