Question 971: Electrostats & Capacitance

Question

Electric field in the region is given by $$\mathbf{E}=\left(M / x^4\right) \hat{\mathbf{i}}$$, then the correct expression for the potential in the region is (assume potential at infinity is zero)

Accepted Answer

$$V=-\int_\limits{\infty}^x E \cdot d r=-\int_\limits{\infty}^x M / x^4 d x=\frac{M}{3 x^3}$$

Answer

$$M / 3 x^3$$

Answer

$$M x^3$$

Answer

$$M / 3 x^4$$

Answer

$$M / x^2$$

Electrostats & Capacitance

Electric field in the region is given by $\mathbf{E}=\left(M / x^4\right) \hat{\mathbf{i}}$, then the correct expression for the potential in the region is (assume potential at infinity is zero)

Choose the correct answer: