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If you take a power source like a dc battery or AC transformer secondary winding and connect an ammeter directly across these power sources you can read the short circuit current available from that source. This gives a measure of internal resistance of the battery or the available wattage of the transformer.
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How does the number of cells affect the current in a circuit?
Well, honey, let me break it down for you. The number of cells in a circuit directly affects the voltage, not the current. Current is determined by the resistance in the circuit and the voltage supplied by the cells. So, more cells mean more voltage, which can potentially increase the current flowing through the circuit.
Function of a breaker?
The purpose of a circuit breaker is to open the circuit in the event of an overload. Wires/conductors are only rated for a specific Amperage. If this amperage is exceeded the conductor/wire begins to heat up and given enough time it becomes a fire hazard. For instance a 15 amp breaker will trip once the Amps drawn through that circuit exceed 15 amps. The short answer is to keep you safe.
What do you mean by resultant current?
The sharing of current between different components in an AC circuit
What does properly grounded mean?
Properly grounded means that all metallic parts of equipment capable of carrying current, in a short circuit condition, will have the same or be at the same potential as that of the service ground.
What does the term closed circuit mean relative to electricity?
Closed circuit means circuit is complete without any break in between and current is flowing if there is any source.
