Which of the following statements is false?
1. | Wheatstone bridge is the most sensitive when all the four resistances are of the same order of magnitude |
2. | In a balanced Wheatstone bridge if the cell and the galvanometer are exchanged, the null point is disturbed |
3. | A rheostat can be used as a potential divider |
4. | Kirchhoff’s second law represents energy conservation |
In the given circuit, an \(8~\text{V}\) battery powers a network of resistors. The current \(i_1\) flows from point \(A\) to point \(C\) through the resistor network. The value of \(i_1\) is:
1. | \(2~\text{A}\) | 2. | \(1~\text{A}\) |
3. | \(5~\text{A}\) | 4. | \(4~\text{A}\) |