Multi-loop Circuits and Kirchoff's Rules

A multi loop circuit is shown below. Find the currents I_1,I_2,I_3,I_4 and the voltages E_1 and E_2.

Application of Kirchoff's Laws to circuit with multiple loops - Electrical Engineering Stack Exchange

Lab rEpOrT kIRcHoFF'S rUlEs, PDF, Electrical Network

Kirchhoff's Rules

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Lab rEpOrT kIRcHoFF'S rUlEs, PDF, Electrical Network

Kirchhoff's laws (article), Circuits

Physics Notes

How can I solve a multiloop circuit using Kirchhoff's laws?

10.4: Kirchhoff's Rules - Physics LibreTexts

Multi-loop Circuits and Kirchoff's Rules

10.4: Kirchhoff's Rules - Physics LibreTexts