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MCAT Physical : Ohm's Law

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Example Question #1 : Ohm's Law

A $\small 12V$ $\displaystyle \small 12V$ battery supplies power to a circuit with a current of $\small 16A$ $\displaystyle \small 16A$ . What is the resistance in this circuit?

Possible Answers:

$9\Omega$ $\displaystyle 9\Omega$

$0.75\Omega$ $\displaystyle 0.75\Omega$

$12\Omega$ $\displaystyle 12\Omega$

$1.33\Omega$ $\displaystyle 1.33\Omega$

$192\Omega$ $\displaystyle 192\Omega$

Correct answer:

$0.75\Omega$ $\displaystyle 0.75\Omega$

Explanation:

To find resistance from voltage and current, we will need to use Ohm's law:

V=IR $\displaystyle V=IR$

$R= \frac{V}{I}$ $\displaystyle R= \frac{V}{I}$

We are given the voltage and current, allowing us to solve for the resistance.

$R = \frac{12V}{16A} = 0.75\Omega$ $\displaystyle R = \frac{12V}{16A} = 0.75\Omega$

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MCAT Physical : Ohm's Law

Study concepts, example questions & explanations for MCAT Physical

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Example Question #1 : Ohm's Law

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