At what distance from a point charge of 7.3 μC would the electrical potential be 4.9 × 10⁴ V? (k_e = 8.99 × 10⁹ N⋅m²/C²) A) 1.64 m B) 0.4 m C) 1.34 m D) 6.03 m E) 0.67 m

Question

Quizplus · Accepted Answer

The formula to calculate electric potential V at a distance r from a point charge q is:

V = kq/r

where k is Coulomb's constant, q is the charge of the point charge, and r is the distance from the point charge.

Rearranging the formula to solve for r:

r = kq/V

Plugging in the given values:

r = (8.99 × 10^9 N⋅m^2/C^2) x (7.3 x 10^-6 C) / (4.9 x 10^14 V)
r = 1.34 m

Therefore, the answer is C.

At What Distance from a Point Charge of 7