| List-I (Cell/Tissue/Organs) | List-II (System) |
|---|---|
| 1. Mesorchium | 1. Reproductive system |
| 2. Uriniferous tubules | 2. Excretory system |
| 3. Endocrine glands | 3. Chemical coordination |
| 4. Sinus venosus | 4. Vascular system |
B is constant, no current in the cube. Cube is moving with velocity \(v\). The direction of electric force on the electron inside this cube is