Question

During a short circuit, the current in the circuit -

• A. decreases significantly
• B. does not change
• C. increases heavily
• D. changes continuously

Hint:

Fuses and MCBs are designed to break the circuit when this dangerous surge of current occurs.

Answer 1

The Correct Option is C

Step 1: Understanding the Concept:
A short circuit occurs when a live wire comes into direct contact with a neutral wire, bypassing the normal electrical load.

Step 2: Detailed Explanation:
When the load is bypassed, the total resistance of the circuit drops to an extremely low value.
According to Ohm's law (\(I = \frac{V}{R}\)), if resistance (\(R\)) approaches zero, the current (\(I\)) increases dramatically.

Step 3: Final Answer:
The current increases heavily.