The total emf induced in a closely would coil of $\mathrm{N}$ turns in which the magnetic flux linked with the coil changing at the rate $\frac{\mathrm{d} \phi_{\mathrm{B}}}{\mathrm{dt}}$ is

• Correct answer
  A

  $-\mathrm{N} \frac{\mathrm{d} \phi_{\mathrm{B}}}{\mathrm{dt}}$
• B

  $\mathrm{N} \frac{\mathrm{d} \phi_{\mathrm{B}}}{\mathrm{dt}}$
• C

  $-\mathrm{N} \frac{\mathrm{d}^2 \phi_{\mathrm{B}}}{\mathrm{dt}^2}$
• D

  $-\frac{\mathrm{d} \phi_{\mathrm{B}}}{\mathrm{dt}}$

Hence, the correct answer is option: 'A'.