AC stands for alternating current and means that the current changes directions, flipping repeatedly from positive to negative and back again.DC means direct current, the current only flows in one direction and does not change polarity.
The polarity at which it limits a waveform.
Immediate and catastrophic destruction of transistors and/or diodes. While that does not ALWAYS occur, it's certainly possible. Start with the alternator. No doubt those diodes have been destroyed if a battery has been connected with reverse polarity.
HZ. Hertz is the name given to the frequency of the alternating circuit. Direct current (DC) has no frequency since one wire is always positive and the other is always negative; but AC (Alternating Current) rapidly changes polarity, and does so at a rate that is defined by HZ.
as direction of current reverses it is shown in form of positive and negative cycles
-- negative polarity -- positive polarity
Polarity is the direction of flow of electrons throughout a circuit. There are two types of polarity: positive and negative. Postive polarity is of older circuits which means electrons flow from positive to negative. Negative polarity is of more modern circuits and that is the flow of electrons from negative to positive such as on car batteries
the way in which the positive & negative terminals on the battery or power supply are attached to the electromagnet. switching the leads from the positive terminal to the negative one, and the negative one to the positive terminal should reverse the polarity of your electromagnet.
Normal polarity is for the power to normally go from positive to negative, reverse polartity is to change the positive to a negative and the negative to a positive so the power goes the other way.
The polarity of a circuit is dependent upon the type of circuit. Direct current circuits have one negative pole and one positive pole and they flow in one direction. Alternating current circuits the electron flow reverses because the tow poles alternate between negative and positive.
Polarity questions can be categorized into positive polarity questions, which expect an affirmative response, and negative polarity questions, which expect a negative response. Positive polarity questions typically start with words like "Do," "Can," "Will," etc., while negative polarity questions usually start with words like "Don't," "Can't," "Won't," etc. These types of questions are important in linguistics and can impact the structure and interpretation of sentences.
Basic transistors have three lead contacts that do have polarity . There are two kinds referred to as P-N-P (for positive-negative-positive leads) and N-P-N (for negative-positive-negative leads).
both
Polarity refers to the positive or negative charge of a molecule or its parts. In chemistry, it describes the separation of charge in a molecule that has areas of differing electronegativity. A polar molecule has a positive end and a negative end.
In the US, it is common practice in a DC circuit to refer to the polarity for which "positive (+) charge" is flowing. Positive charge (current) will flow out of a voltage supply's positive (+) terminal which means positive charge will flow into the (+) terminal of a circuit load (resistor, etc). This is an arbitrary convention and may be reversed in older or foreign textbooks. In such cases all positive (+) references in the previous description would be replaced by negative, (-) notations.
The polarity of both ends of a magnet is different. The positive and negative polarity exist for a magnet.
Welder polarity has to do with DC (Direct Current) welders. Essentially, polarity is the direction of the current. Straight polarity means that the current is running from the electrode, to the metal, and back through the grounding clamp. Reverse polarity means that the current is going the opposite way, from the grounding clamp, through the metal, and up through the electrode.