Connecting sources and Kirchhoff’s rules

Lessons 38 · 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.

6 cells in series, each ℰ = 1.5 V. What is the battery’s EMF (V)?

A battery has ℰ = 12 V, r = 1 Ω, R = 11 Ω. What is the current (A)?

Two cells in parallel, each r = 2 Ω. What is the total internal resistance (Ω)?

3 A and 2 A flow into a node and one current flows out. What is it (A)?

How can a car accumulator reach 12 V (from six 2 V cells)?