BioMedical Admissions Test (BMAT) 2026 – 400 Free Practice Questions to Pass the Exam

Question: 1 / 400

What is the nature of current in a series circuit?

Constant

In a series circuit, the current is always the same throughout all components of the circuit. This is due to the principle of charge conservation; the flow of charge (current) must remain unchanged as it moves through the series pathway. Since there are no branching paths for current to divert, any increase in resistance or changes in the circuit's characteristics will affect the total voltage or total resistance but will not change the current flowing through the individual components at any given moment.

The reason the current is constant is that it is governed by Ohm's law (V = IR), which relates voltage (V), current (I), and resistance (R). If the total voltage is fixed and changes only in resistance occur, the current will respond consistently based on these variables but will not fluctuate at different points. Therefore, the nature of current in a series circuit is indeed constant.

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Variable

Intermittent

Dependent on voltage

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