Engineering Physics-I Quiz
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Questions and Answers

What is the expression for the electric potential due to a single point charge?

  • $V = \frac{kQ}{r}$ (correct)
  • $V = \frac{Q}{kr}$
  • $V = kQr$
  • $V = \frac{Q}{r^2}$

What is the work done on an electric dipole in a uniform electric field?

  • Maximum when the dipole is aligned with the field
  • Depends on the orientation of the dipole
  • Zero (correct)
  • Maximum when the dipole is perpendicular to the field

What is the expression for the torque on an electric dipole in a uniform electric field?

  • $\tau = \vec{p} \cdot \vec{E}$
  • $\tau = \vec{p} + \vec{E}$
  • $\tau = \vec{p} \times \vec{E}$ (correct)
  • $\tau = \vec{p} \div \vec{E}$

What is the line integral of the electric field often referred to as?

<p>Work done by the electric field (B)</p> Signup and view all the answers

What is the expression for the magnetic effect of current?

<p>Biot-Savart law (B)</p> Signup and view all the answers

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