2. Solving electrical problems depends on the skills of the circuit, and at the same time, it is helpful for you to understand the circuit by judging whether the ammeter or voltmeter is getting bigger or smaller.

3. For complex circuits, first remove the voltmeter, then look at the circuit and analyze it slowly.

4. Remember the characteristics of series and parallel circuits.

5. For electric power, on the basis of learning the above circuits well, see more examples to solve. Electric power calculation involves many mathematical methods, learning to list equations, solving equations and skillfully using formulas.

In short, it all depends on proficiency, and it will get better gradually.