Holding wave speed fixed while magnetic amplitude changes makes E=cB readable. Exact arithmetic here means exact results for the stated model inputs; measured inputs still carry uncertainty and significant-figure limits.
highlighted = computed this step
One tesla gives six volts per metre
Hold the training speed at 6 metres per second. With magnetic amplitude 1 tesla, the electric amplitude is 6 volts per metre.
E=cB=6m/s⋅1T=6V/m
Two tesla doubles the electric field
Only the magnetic amplitude changes to 2 tesla. The same speed makes the electric field 12 volts per metre.
E=6m/s⋅2T=12V/m
Three tesla makes eighteen volts per metre
The third row changes magnetic amplitude to 3 tesla and closes at 18 volts per metre. Three rows make the proportional relation scannable.