Inside a long solenoid, the magnetic field is uniform and directed along the axis of the solenoid.

The magnetic field inside a solenoid is uniform and directed along the axis of the solenoid.

The magnetic field inside a solenoid is directed from the north pole to the south pole of the solenoid.

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

Using Ampere's Law, B = μ₀NI/2πr inside a toroidal solenoid.

The magnetic field strength in a toroidal solenoid is directly proportional to the number of turns per unit length.

The magnetic field inside a toroidal solenoid is uniform and non-zero, depending on the current and the number of turns.

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

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

Ampere's Law states that the magnetic field around a closed loop is proportional to the electric current passing through the loop.

Reversing the current reverses the direction of the magnetic field.

The magnetic field strength is directly proportional to the current, so it halves.

According to the right-hand rule, if you point your thumb in the direction of the current, your fingers curl in the direction of the magnetic field lines, which is counterclockwise.

The direction of the magnetic field around a current-carrying wire is determined by the right-hand rule, which gives a clockwise or counterclockwise direction based on the current's direction.

Using the right-hand rule, if you point your thumb in the direction of the current, your fingers curl in the direction of the magnetic field, which is counterclockwise.

Increasing the current in a solenoid increases the magnetic field strength, as B is directly proportional to I.

According to Ampere's Law, increasing the current in a solenoid increases the magnetic field strength inside it.

Increasing the number of turns in a coil increases the magnetic field produced, as the field is proportional to the number of turns.

Increasing the number of turns increases the magnetic field strength.

The magnetic field at the center of a circular loop is inversely proportional to the radius; thus, increasing the radius decreases the magnetic field.

The magnetic field at the center of a circular loop decreases as the radius increases.

The integral form of Ampere's Law states that the line integral of the magnetic field B around a closed loop is equal to μ₀ times the enclosed current I.

Using Ampere's Law, B = μ₀I/2πr for an infinitely long straight wire.

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

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 inside a long solenoid is B = μ₀nI.

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

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

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