BioMedical Admissions Test (BMAT) Practice Test

Question: 1 / 400

What is the unit for resistance (R)?

Watt (W)

Coulomb (C)

Volts (V)

Ohms (Ω)

The unit for resistance is the ohm, represented by the symbol Ω. Resistance is a measure of how much a component resists the flow of electric current. According to Ohm's Law, resistance can be defined by the relationship between voltage (V) and current (I), expressed as R = V/I. This means that for a given voltage, the resistance dictates how much current will flow.

The other units mentioned relate to different physical quantities: watts are units of power, which represent the rate of energy transfer; coulombs are units of electric charge; and volts are units of electric potential, which measure the force driving the current through a circuit. Resistance is specifically defined and measured in ohms, making it the distinct and correct answer for this question.

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