Bennett Mechanical Comprehension Practice Test 2025 - Free Practice Questions and Review Guide

Question: 1 / 400

What happens to the current passing through the main branch in the circuit if one of the bulbs smashes?

It becomes zero

When one of the bulbs, which is typically connected in a series circuit, smashes or fails, it creates an open circuit. In a series circuit, the current that flows through each component, including each bulb, is the same. Therefore, if one bulb is no longer functional, the current flowing through the entire circuit halts, resulting in zero current.

This concept applies because, in a series circuit, the complete pathway for current to flow needs to be intact. If any component is removed or fails (like a smashed bulb), it interrupts this pathway, preventing any current from flowing at all. Thus, the destruction of one bulb leads to a situation where the main branch of the circuit cannot conduct electricity, resulting in no current passing through.

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It doubles

It decreases by a factor of 1.5

It remains constant

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