☰ Contents · Physics

Ohm’s law for a complete circuit

Lessons 37 · 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
ℰ = 24 V, r = 2 Ω, R = 10 Ω. What is the current (A)?
2
What is the terminal voltage in this circuit (V)?
3
ℰ = 1.5 V, r = 0.5 Ω. What is the short-circuit current (A)?
4
R = 4 Ω, r = 1 Ω. What is the efficiency (%)?
5
Why must the two terminals of a battery never be joined with a wire?