Question

An infinitely long line charge distribution produces a field of $9 \times 10^4\ \text{NC}^{-1}$ at a distance of $2\text{ cm}$. The linear charge density of the distribution is:

• A. $0.01\ \mu\text{C m}^{-1}$
• B. $0.1\ \mu\text{C m}^{-1}$
• C. $1\ \mu\text{C m}^{-1}$
• D. $2\ \mu\text{C m}^{-1}$

Hint:

Always convert distances to meters (SI units) before plugging them into electrostatics formulas to avoid power-of-ten errors!

Answer 1

The Correct Option is B