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Question
At the time of short circuit, the electric current in the circuit ______.
Options
vary continuously
does not change.
reduces substantially
increases heavily
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Solution
At the time of the short circuit, the electric current in the circuit increases heavily.
Explanation:
A short circuit occurs when an electric current escapes the normal load via a low-resistance pathway (usually caused by direct contact between the live and neutral wires). Ohm’s Law (I = V/R) states that current (I) is inversely proportional to resistance. Short circuits lower resistance to near-zero levels, resulting in a sudden and significant rise in current. This quick surge can generate a lot of heat, which could start a fire or damage electrical components.
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