Current, current density and effects of current

Lessons 36 · 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.

240 C passes in 2 minutes (120 s). What is I (A)?

I = 15 A, S = 5 mm². What is j (A/mm²)?

How many coulombs pass through a conductor carrying 4 A in 1 hour (3600 s)?

A 1100 W heater on 220 V draws what current (A)? (I = P/U)

Give two examples of uses of the heating effect of current.