To find the current density at any point inside the sphere, we can use the following steps:

**Calculate the electric field inside the sphere.**The electric field inside the sphere can be calculated using the formula:

```
E = -∇V
```

where V is the electrostatic potential and ∇ is the gradient operator. In spherical coordinates, the gradient of a scalar function is given by:

```
∇V = (1/r)∂V/∂r + (1/r sinθ)∂V/∂θ + (1/rsinθ∂ϕ)∂V/∂ϕ
```

Substituting the given expression for V, we get:

```
E = -∇V = -((1/r)∂(ΦoCosθ)/∂r + (1/r sinθ)∂(ΦoCosθ)/∂θ)
```

Evaluating the derivatives, we get:

```
E = (Φo/r²)(Cosθ + 2sinθ)
```

**Calculate the current density inside the sphere.**The current density inside the sphere is given by:

```
J = σE
```

where σ is the conductivity of the sphere. Substituting the given expression for E, we get:

```
J = (σΦo/r²)(Cosθ + 2sinθ)
```

Therefore, the current density at any point inside the sphere is given by:

`J = (σΦo/r²)(Cosθ + 2sinθ)`