The magnetic field B at a distance r from a long straight conductor carrying current I is given by B = μ₀I/(2πr) according to Biot-Savart Law.

The magnetic field on the axis of a circular loop is given by B = (μ₀I)/(2R) * (R²/(R²+x²)^(3/2)).

The magnetic field on the axis of a circular loop is given by B = (μ₀I/(2R)) * (1/(1 + (z/R)²)^(3/2)) where z is the distance along the axis.

The magnetic field at the center of a circular loop is given by B = μ₀I/2R.

The magnetic field at the center of a circular loop is given by B = μ₀I/(2R).

The magnetic field at the center of a square loop is B = μ₀I/4a.

At the midpoint, the magnetic fields due to the two currents cancel each other out, resulting in zero net magnetic field.

The magnetic field at a point on the axis of a circular loop at a distance x from the center is given by B = μ₀I/(2(x² + R²)^(3/2)).

The magnetic field B at a distance d from a straight wire carrying current I is given by B = μ₀I/(2πd).

Using Ampere's Law, B = μ₀I/2R² at a point on the axis of a current loop.

The magnetic field due to a long straight wire is given by B = (μ₀I)/(2πr).

The magnetic field due to a magnetic dipole at a point along its axial line is given by B = (μ₀/4π) * (2m/r³).

The magnetic field inside a long solenoid is B = μ₀nI.

Using Biot-Savart Law, B = μ₀I/(2πr) = (4π × 10^-7 Tm/A)(5 A)/(2π(1 m)) = 0.01 T.

Using B = μ₀I/(2πr), substituting μ₀ = 4π × 10⁻⁷ Tm/A, I = 10 A, and r = 0.5 m gives B = 0.4 μT.

According to Ampere's law, the magnetic field inside a hollow conductor carrying current is zero.

Inside a hollow cylindrical shell, the magnetic field is zero.

The magnetic field inside a long solenoid is given by B = μ₀nI, where n is the number of turns per unit length.

The magnetic field inside a long solenoid is uniform and parallel to the axis of the solenoid.

The magnetic field inside a long solenoid is given by B = μ₀nI.

Using Ampere's Law, B = μ₀I/2πr for a long straight conductor.

Using Ampere's Law, B = μ₀I/2πr for a long straight conductor.

The magnetic field inside a long, ideal solenoid is given by B = μ₀nI, where n is the number of turns per unit length.

The magnetic field inside a long, ideal solenoid is uniform and parallel to the axis of the solenoid.

The magnetic field inside an ideal solenoid is given by B = μ₀nI, where n is the number of turns per unit length.

The magnetic field inside a long, ideal solenoid is uniform and parallel.

The magnetic field inside a long, straight solenoid is given by B = μ₀nI, where n is the number of turns per unit length and μ₀ is the permeability of free space.

The magnetic field inside a long, straight solenoid is uniform and parallel to the axis of the solenoid, given by B = μ₀nI, where n is the number of turns per unit length.

The magnetic field inside a long solenoid is given by B = μ₀nI.

The magnetic field at the center of a square loop is given by B = (μ₀I)/(√2a).