Question

What is the electric potential at the point indicated with the dot in (Figure 1)? Suppose that q = -1.2 nC Express your answer with the appropriate units. HA O 2 V = Value Units 2.0 nC 3.0 cm 14.0 cm 2.0 nC

Answer 1

The electric potential at a point is calculated using the formula V = k * q / r, where k is the Coulomb's constant, q is the charge, and r is the distance. In the given figure, the electric potential at the indicated point can be calculated using the provided charge and distance.

Step-by-step explanation:

The electric potential at a point in an electric field is given by the formula:

V = k * q / r

Where V is the electric potential, k is the Coulomb's constant (9 x 10^9 Nm^2/C^2), q is the charge, and r is the distance from the point to the charge.

In the given figure, if the charge q is -1.2 nC (negative because it is indicated with a minus sign), and the distance from the point to the charge is 3.0 cm (0.03 m), we can calculate the electric potential.

V = (9 x 10^9 Nm^2/C^2) * (-1.2 x 10^-9 C) / 0.03 m

The electric potential at the point indicated with the dot in (Figure 1) is equal to the calculated value.

Answer 2

The electric potential at the point indicated with the dot is 834v

How to determine the electric potential?

Knowing that the formula for potential due to a point charge is,

`v = K * (q)/(r)`

Lets calculate;

Net potential;

`V= K (2.0nc)/(3.0cm)+ K(2.0nc)/(4.0cm) +K(-1.2nc)/(5.0cm)`

`V= 9 * 10^\(9\) * (10^\(-5)/(10^\(-2\)) \left[(2)/(3) +(1)/(2) - (1.2)/(5) ]`

`V=900\left[(20+15-7.2)/(30) ]`

`V=834v`

Therefore, the electric potential at the point indicated with the dot is 834v

Electric potential, often referred to as voltage, is a fundamental concept in physics that describes the amount of electric potential energy per unit charge in an electric field. It is a scalar quantity that measures the work done per unit charge to bring a positive test charge from infinity to a specific point in an electric field.

See image below for missing part of the question.