WAEC - Physics (1990 - No. 43)
A charge of 1.0 x 10-5 Coulombs experience force of 40N at a certain point in space. What is the electric field intensity?
8.00 x 106NC-1
4.00 x 106NC-1
4.00 x 10-4NC-1
2.00 x 10-4NC-1
2.50 x 10-1NC-1
解释
F = qE; E = F/q = 40/(1.0 x 10-5) = 4.0 x 106