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What power is supplies to a lamp that is operated by a battery moving a 12V difference of potential across it's terminals when the current through the lamp is 2A?
Wiki User
∙ 12y ago
The Formula is:
P=IV
=(2A)(12V)
=24W
Wiki User
∙ 12y ago
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A battery or a generator.
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How is African Iron Age difference from that in other regions?
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You really should be asking what is 'line' and neutral.In Europe, the secondary winding of a distribution transformer has a pair of terminals. One is connected to earth and, therefore, has a potential of approximately 0 V with respect to earth. This terminal is termed the neutral, and the conductor connected to this terminal is called the neutral conductor. The other terminal is termed the line, and the conductor connected to this terminal is called the line (not 'phase'!) conductor. A distribution transformer's line conductor has a nominal potential of 230 V with respect to the neutral.In North America, distribution transformers' secondary windings have three terminals. The centre terminal is grounded, and provides the neutral. Each of the outer terminals acts as a line terminal. The nominal potential difference between each of these two line terminals is 240 V, while the nominal potential between either line terminal and the neutral terminal is 120 V.
