query: Why not reverting back to DC current as main electricity?
positive_passages.docid: 58624
positive_passages.text: Why are the power transmission/distribution systems AC and not DC?
negative_passages.docid: 71421
negative_passages.text: How do I change a switched outlet to a half-hot outlet?
negative_passages.docid: 33777
negative_passages.text: home socket with DC voltage
negative_passages.docid: 38114
negative_passages.text: Basic questions about voltage drop in DC circuit
negative_passages.docid: 67432
negative_passages.text: Can connecting of AC adaptor first into device, then into mains pose a risk of voltage spike?
negative_passages.docid: 58516
negative_passages.text: Limiting the short circuit current of a power supply
negative_passages.docid: 52547
negative_passages.text: Transformer, how the primary current is adjusted to be equal to the secondary load (without considering magnetizing current)?
negative_passages.docid: 83604
negative_passages.text: Current tranformer, burden resistor calculation
negative_passages.docid: 48848
negative_passages.text: Relay: higher voltage allowed at lower current?
negative_passages.docid: 34352
negative_passages.text: Why is PWM used to control DC motor speed instead of using a variable resistance?
negative_passages.docid: 69578
negative_passages.text: Is it really possible to "boost" 6 V DC to above 50 kV? Or even 400 kV?
negative_passages.docid: 158957
negative_passages.text: Is a current transformer appropriate for a voltage step up flyback converter?
negative_passages.docid: 138609
negative_passages.text: Can I backfeed a portable generator into my house's electrical system?
negative_passages.docid: 23642
negative_passages.text: Why current in series circuit is the same?
negative_passages.docid: 109275
negative_passages.text: How does the current remain the same in a circuit?
negative_passages.docid: 58019
negative_passages.text: How does a capacitor block DC?
negative_passages.docid: 147129
negative_passages.text: If induced voltage (back-emf) is equal and opposite to applied voltage, what drives the current?