MDCAT Physics MCQ #974

MDCAT Physics MCQ #974

1. Question 1

   Q1. The magnetic field at the center of a circular coil carrying current is given by which formula?

   • A) \frac{\mu_0 I}{2r}
   • B) \frac{\mu_0 I}{4\pi r}
   • C) \frac{\mu_0 I}{2\pi r}
   • D) \frac{\mu_0 I r}{2}

   Answer: \frac{\mu_0 I}{2r}

   Explanation: The formula \frac{\mu_0 I}{2r} gives the magnetic field at the center of a circular coil. Other options are incorrect formulas.