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Since load current is determined by dividing the supply voltage by the resistance (for d.c., or impedance for a.c.) of the load, a short circuit would theoretically result in an infinite supply current. This is because a short circuit has, theoretically, zero resistance. In practice, however, the current would be cut off by the operation of an overcurrent protective device -such as a fuse or circuit breaker- which would disconnect the short circuit from the supply voltage.
A worst-case scenario could occur should you short-circuit a car battery with, say, a spanner (wrench). With no fuse to protect the battery, the resulting short-circuit current, if sustained, may be high enough to cause catastrophic damage to the battery.
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Why a short circuit happen?
Presumably, the current follows a path (a circuit) to do whatever it was "made" to do. If water, for instance, enters the circuit, a shorter path may develop, and the current will (partially) take the short circuit. Or a wire could become lose and short circuit the intended path.
What is used in an electrical circuit to prevent a short circuit?
difference between p type and n type semiconducter materialAnswerInsulation is used to prevent a short current. To protect the circuit should a short-circuit fault occur is either a fuse or a circuit breaker.
Why fuse will get burnt when phase and neutral get connected?
A fuse is an overcurrent protection device, which protects a circuit by melting in the event of either a sustained overload current, or a short-circuit current. A short-circuit current will occur when a line (not 'phase') conductor makes direct contact with a neutral (or earth) conductor.
What is output short circuit current?
The output short circuit current is the solar cell's current when the voltage is zero, or when it, is short circuited.
When you will get to know that short circuit will happen?
1. That if a short circuit occurs we will get a sign before short circuit will happen or not ? 2. what we can do ? 3. how fuse can get a short circuit ? 4. which wires we have to use from preventing short circuit ?
Why might the current in a short circuit be higher than the current in the original circuit?
The current in a short circuit may be very high because the resistance in the short circuit is probably less than the resistance in the original circuit.
What is the effect of transformer impedance on short circuit current?
Short circuit current will increase a lot.
What is short circuit ratio of an alternator?
Short circuit ratio is the ratio of field current required for the rated voltage at open circuit to the field current required for the rated armature current at short circuit
How short circuit current measure?
In shortg circuit current is infinitive.
What happens in a short circuit occurs in an electric circuit?
A short circuit is a condition whereby a point or section of the circuit offer a short path for current to return to the power supply. It occurs when two or more points or sections of the circuit touches each others (but only and only if that results in drop in resistance to such an extent that it causes excessive current to flow through.
What is short circuit ratio?
Ratio of field current required to produce rated voltage in open circuit to the field current required to produce rated current in short circuit.
What term is used to describe current that can flow in a circuit as a result of an undesired short circuit?
Generically, it's an 'overcurrent'; specifically, it's a 'short-circuit current'.
