Physics (AS & A Level) · May / June 2019 · Paper 12 · Question 3

The Planck constant h has SI units J s. Which equation could be used to calculate the Planck constant?

1. Ah = DE/v where D is distance, E is energy and v is velocity
2. Bh = v/D where v is velocity and D is distance
3. Ch = 1/(4πE) where E is electric field strength
4. Dh = Fr²/m where F is force, r is radius and m is mass

As printed in the paper