Correct answer
To prevent an increase in current intensity from damaging any element of the electrical circuit.
A fuse protects a circuit against excessive current: its element melts and interrupts current when its operating conditions are exceeded. It is not a voltage regulator and does not reverse current direction. If it blows, investigate the cause and replace it only with the manufacturer-specified type and amperage; do not bypass it or fit a higher-amperage fuse to prevent blowing.
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To prevent the electric current from changing direction.
To prevent an increase in current intensity from damaging any element of the electrical circuit.
To reduce the current intensity before it enters the electrical circuit.
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