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Power is another term for watts. It is the product of amps flowing in the circuit, times the voltage in the circuit. The amount of power the circuit consumes is governed by the resistive or inductive load.

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15y ago
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12y ago

The components in the electric circuit get their operating power from the power supply,

if there is one. The power supply, if there is one, gets the energy to operate the circuit

from one of the following sources:

-- battery, fruit, potato, etc. (stored chemical energy)

-- photovoltaic cell (solar cell)

-- wind (captured by a windmill)

-- plug inserted into an outlet in the home, delivering energy from the public utility company,

which gets the energy from one of the following:

. . . . . burning coal to boil water to spin a generator

. . . . . burning oil to boil water to spin a generator

. . . . . burning natural gas to boil water to spin a generator

. . . . . capturing the heat from radioactive decay of uranium to boil water to spin a generator

. . . . . focusing the sun onto a water pipe to boil water to spin a generator

. . . . . holes dug deep into the ground to capture heat from the earth to boil water to spin a generator

. . . . . water wheels stuck into waterfall to spin a generator

. . . . . photovoltaic cells (solar cells)

. . . . . wind (captured by windmills) to spin a generator

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13y ago

a battery

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Q: Where does the power for a circuit come from?
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