What is the electric field due to a point charge of +3 µC at a distance of 0.3 m
Practice Questions
Q1
What is the electric field due to a point charge of +3 µC at a distance of 0.3 m?
30 N/C
90 N/C
300 N/C
900 N/C
Questions & Step-by-Step Solutions
What is the electric field due to a point charge of +3 µC at a distance of 0.3 m?
Step 1: Identify the formula for electric field (E) due to a point charge: E = k * |q| / r^2.
Step 2: Determine the values needed for the formula: k (Coulomb's constant) = 9 × 10^9 N m²/C², q (charge) = +3 µC = 3 × 10^-6 C, and r (distance) = 0.3 m.
Step 3: Substitute the values into the formula: E = (9 × 10^9) * (3 × 10^-6) / (0.3)^2.
Step 4: Calculate (0.3)^2, which is 0.09.
Step 5: Now calculate the numerator: (9 × 10^9) * (3 × 10^-6) = 27,000.
Step 6: Divide the numerator by the denominator: 27,000 / 0.09 = 300,000.
