Fields, with the equation on the screen.

The nine concepts

Each one is mapped to the SL statements of the IB Physics subject guide (first assessment 2025).

1. 1Newton’s law of gravitationF = G m₁ m₂ / r²D.1 · Gravitational fields
2. 2Gravitational field strength and field linesg = F / m = G M / r²D.1 · Gravitational fields
3. 3Kepler’s laws of orbital motionT² ∝ r³D.1 · Gravitational fields
4. 4Electric charge and Coulomb’s lawF = k q₁ q₂ / r²D.2 · Electric and magnetic fields
5. 5Electric field strength and field linesE = F / q = k Q / r² = V / dD.2 · Electric and magnetic fields
6. 6Magnetic field patternsB = μ₀ I / 2π rD.2 · Electric and magnetic fields
7. 7Force on a moving charge and on a currentF = q v B sin θ = B I L sin θD.3 · Motion in electromagnetic fields
8. 8Charged particles in electric and magnetic fieldsr = m v / q B, v = E / BD.3 · Motion in electromagnetic fields
9. 9The force between parallel current-carrying wiresF / L = μ₀ I₁ I₂ / 2π rD.3 · Motion in electromagnetic fields

Level

Written for IB Diploma Physics SL. It stays inside the SL statements: induction, potential and escape speed are HL and are not included.

How it marks

Every number, in the simulations and in the mark schemes, is computed from the same equations with the data-booklet constants. Numerical answers are checked within a rounding tolerance and with the unit; written answers are self-marked against a mark scheme.

On a phone

Everything works with a finger. The simulations stack above their controls on a small screen.