Physics - Electricity - Static - Electric field - Electric Field
A 5-step lesson. Step 1: 'Electric field E = Force per unit positive charge. E = F/q (units: N/C or V/m). It's a vector - has magnitude and direction.' Step 2: 'For a point charge Q: E = kQ/r² (same inverse square law!). Direction: away from positive Q, toward negative Q.' Step 3: 'Electric field li