☰ Contents · Physics

Charge and electric field strength

Lessons 30 · 1 lessons · N. Sh. Turdiyev, K. A. Tursunmetov, A. G. Ganiyev, K. T. Suyarov, J. E. Usarov, A. K. Avliyoqulov. Physics Grade 10, 1st edition. Niso Poligraf Publishing House, Tashkent, 2017
Answers are for parents and teachers.
1
What is E at r = 0.5 m from q = 5 nC (N/C)? (k = 9·10⁹)
2
A force of 8·10⁻⁷ N acts on a test charge 2·10⁻⁹ C. What is E (N/C)?
3
E₁ = 9 N/C and E₂ = 12 N/C are perpendicular. What is the resultant E (N/C)?
4
Between two charges E₁ = 50 N/C (right) and E₂ = 80 N/C (left). What is the resultant E and its direction?
5
Why does a charged body attract a light piece of paper and then repel it?