Problem 1 on current electricity

[anshuiit]

Homework Statement

the problem is attached to this post

Homework Equations

Req=1/R1+1/R2+... for parallel and Req.=R1+R2+... for series... Kirchoff's law for Current and Potential to be applied

The Attempt at a Solution

completely lost ... pls help

 

[N-Gin]

First you need to find current and voltage across $R_{2}$ as a function of time. Then you can find the generated heat by using the formula

$$W_{2}=\int^{\infty}_{0}V_{2}(t)I_{2}(t)dt,$$

where $V_{2}$ and $I_{2}$ are the voltage and current across resistor $R_{2}$. As you see, time goes from 0 to infinity (when the capacitor is fully charged).

 

[anshuiit]

First you need to find current and voltage across $R_{2}$ as a function of time. Then you can find the generated heat by using the formula

$$W_{2}=\int^{\infty}_{0}V_{2}(t)I_{2}(t)dt,$$

where $V_{2}$ and $I_{2}$ are the voltage and current across resistor $R_{2}$. As you see, time goes from 0 to infinity (when the capacitor is fully charged).

can u give me the answer?

 

[N-Gin]

can u give me the answer?

It's against the policy! You need to show some effort first.

 

[rwisz]

As a scientist, it is important to approach problems in a systematic and logical manner. The first step would be to carefully read and understand the problem statement. In this case, the problem is related to current electricity and involves the use of Kirchoff's laws for current and potential.

The next step would be to identify the relevant equations and principles that can be applied to solve the problem. In this case, the equations for equivalent resistance in parallel and series circuits, as well as Kirchoff's laws, are mentioned in the problem statement. It is important to have a clear understanding of these equations and principles before attempting to solve the problem.

Once the relevant equations and principles have been identified, the next step would be to carefully analyze the circuit and identify the known and unknown values. This will help in determining the appropriate approach to solving the problem.

In this case, it is also important to draw a circuit diagram and label all the known values and unknowns. This will help in visualizing the problem and making it easier to apply the equations and principles.

After carefully analyzing the problem and identifying the known and unknown values, the next step would be to apply the relevant equations and principles to solve for the unknown values. It is important to show all the steps and calculations in a clear and organized manner.

In conclusion, as a scientist, it is important to approach problems in a systematic and logical manner, carefully analyzing the problem and applying the appropriate equations and principles to arrive at a solution.