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a single circuit has only one source of energy, like a battery compartment (no matter the amount of batteries) a double circuit has two sources of energy, like two batter compartments
The purpose of the battery in a circuit is to wive energy to the circuit
The purpose of the battery in a circuit is to wive energy to the circuit
If you're talking about the large spring inside the battery compartment - it's to hold the batteries securely against the contacts that form the circuit.
No, a circuit protection device must open the circuit on a fault current or overload.
When connected to the cable which normally runs to the starter it completes the circuit. Electrons flow from the negative terminal to the positive terminal.
For a circuit that is operating normally, it will continue to operate normally. However, by replacing the correct fuse with one of a higher rating, you are removing the circuit's overcurrent protection and, in the event of a fault, the conductors and load may become damaged. Incidentally, the symbol for ampere is 'A', not 'a'.
The voltage of the battery, and the resistance of the circuit (including the resistance of the wire and the internal resistance of the battery).
To provide power for the circuit.
The battery is the power source of the circuit. It supplies current to the circuit and the circuit is simply a path for the current to follow. When you remove the current (battery), the path still exists but there is no current going through it.
PDB could stand for power distribution board, normally a low voltage (below 1000V) board used in industrial applications. Typically contains about 20 circuit feeds, each one will have a fuse or a Miniature Circuit Breaker for overcurrent protection of the circuit it feeds. Normally fed in the UK by a 3 phase 415V supply.
The purpose of the battery in a circuit is to wive energy to the circuit