No. A battery produces DC, or Direct Current.
No one knows.
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Well, anyone with basic knowledge of physics knows that it does not.
A changing magnetic field produces an electric current, so yes. This is true.
Yes.
False, most houses use alternating current.
Yes, it is true that current supply from generating plants is an alternating current. There is no success found in bulk power generation of direct current ( D.C. ) in a power plant. But yes it is possible to transmit the power in the form of direct current ( High Voltage Direct Current Transmission-HVDC Transmission ) that possible after converting the generated alternating current into direct current with the help of high range converters.
True ~tekno
'Real', or 'true', power is defined as the rate at which work is done by the in-phase component of an alternating current.
Yes it is true it is used in transformers and it works with alternating current and direct but if direct then it only produces it for a very short time. Not sure why it happens cause i am only gcse but I am sure if you look up transformers then you will find out how they work.
It is false that an electric motor converts electrical energy to potential energy.
TRUE
In the United States, if the outlet is polarized (one slot is larger than the other), the smaller slot is the positive, or hot, assuming it is wired correctly.Another PerspectiveThe above answer is correct in that there is a "hot" and a "neutral", but technically, if you are asking about true polarity, there is no positive and no negative in a housing or commercial outlet. Utility power service is referred to as "alternating current", meaning that the true polarity of an outlet reverses 60 times per second, with one side temporarily being positive and the other negative.If you are trying to use "direct current", you will need to use some kind of diode or rectifier to change the alternating current to direct current.
There must be a current through the bulb in order for it to glow.
what kind of batteries do you have?? if the mobile phone's battery, just put in your phone. If it's car battery, just connect the red cable to positive, black cable to negative plates. on rechargeable alkaline type batteries the charger should have a plus and negative sign on it. usually the neg end is the one with the spring. the flat end of the battery is usually negative.