_ is a source of electrical energy having fixed polarity and terminals
Correct answer: C. Battery
- A. Motor
- B. Metals
- C. Battery
- D. Generator
Explanation
An electric battery is a source of electric power consisting of one or more electrochemical cells with external connections for powering electrical devices.When a battery is supplying power, its positive terminal is the cathode and its negative terminal is the anode. The terminal marked negative is the source of electrons that will flow through an external electric circuit to the positive terminal.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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