I failed a course, and the system became my study supervisor.

Chapter 29: The Farce Caused by Do Not Disturb (Part )
Finally, after online discussions between Xu Ling and team members, the experimental plan was handed over to Ji Yun for preliminary design.

After the plan is designed, it will be discussed and improved by the group.

The end result was that the work had already started and Xu Ling had some free time.

……

"Students, the midterm exam for our electromagnetics course will be held at the end of April. Please vote online for the specific date. If you have any difficulties, please raise them."

Zhang Zhongyao announced this notice as the get out of class was about to end.

"What is the scope of the exam?" some students asked questions.

"We'll only be testing the electrical engineering portion, which is the first four chapters. I'll finish the unfinished chapter 4 soon."

Zhang Zhongyao added.

Then, he specifically reminded, “We won’t set aside time for review. After I finish teaching Chapter 4, I will continue with Chapter 5. I won’t wait.

Students should use their spare time to review carefully. As usual, the midterm exam will be quite difficult."

The students in the audience were instantly excited.

"Oh my god! It'll take Teacher Zhang at least two more class periods to finish Chapter 4, which means it'll be next week. How much time do we have left to review then?"

Student A complained to the students around him.

"Yeah! And they said it was difficult. How am I supposed to take the test? I didn't even understand Gauss's theorem and the questions about various dielectrics before."

The students next to him also started complaining.

Even Xu Ling was a little nervous because he had more things to do than ordinary students.

After the experimental plan is designed, Xu Ling will immediately join the laboratory. He is not sure how much time he can spare for review.

Hey! It’s not easy to be a top student.

Xu Ling couldn't help but sigh in his heart.

"Ding!"

"There are new tasks released, please check them in time."

At this moment, the system sound sounded.

It was like hearing heavenly music, and his ears were suddenly enlightened! Xu Ling's brows instantly relaxed a lot.

【Ordinary tasks:
(50) Being busy is the foundation of a top student's life: To prepare for the midterm exam, please complete electromagnetic study questions within one day. The exercises are limited to the "Thousand Solutions to Electromagnetic Exercises". (Can be claimed repeatedly)
Completion reward: 30 study points.

Failure penalty: deduct 50 study points.

Refusal: Yes.

Glory Mission
(1) Martial Arts Performance to Win the Chip (Second Round)
……

(94) Be strict with yourself: Please obtain a score of or above in the electromagnetics midterm exam.

Completion reward: 30 motivation points.

Failure penalty: deduct 50 motivation points.

Can it be rejected: No.

Complete two tasks in a row!

Xu Ling was instantly excited and quickly waved his hand to take them all.

Xu Ling happened to have a copy of "Thousands of Solutions to Electromagnetism Problems" and he always brought it to electromagnetics class.

So, under Lin Yuxin's surprised gaze, Xu Ling sat calmly, opened the exercise book, and started to practice, completely ignoring the bell for the end of get out of class.

"Are you in such a hurry? Don't you want to eat?" Lin Yuxin asked in surprise.

"I'm not really hungry. I just want to do a few exercises. I haven't done them in a while, so they're a little rusty."

Xu Ling said casually.

Why is this person so competitive? Is this what they call someone smarter than you and more hardworking than you?
Lin Yuxin felt a little nervous.

But Lin Yuxin couldn't bear the fact that she was really hungry, so she had to leave first. At the same time, she silently changed her lunch break plan to doing exercises.

In just a few minutes, Xu Ling was the only one left in the classroom.

"In a certain medium, a dielectric sphere is placed. Its relative dielectric constant is r1, the relative dielectric constant of the external medium is r2, and the radius of the sphere is R. Find
(1) The self-energy of the sphere (2) The polarized charge density inside and outside the sphere, and the polarized charge density on the sphere's surface

(3) The polarization energy of the sphere, and substitute r2 = 1, r1 = 2 to calculate"

This is an energy problem when dielectrics exist. Although it looks complicated, Xu Ling solved it without much effort by using basic theorems, constitutive equations and energy calculation formulas.

The following questions involved all kinds of knowledge points, from the simplest Coulomb's law, to using Gauss's theorem to calculate the electric field strength, and then to using integration to calculate the potential difference and energy. Xu Ling solved all the problems quickly and easily.

"Ding!"

"mission completed!"

"30 study points have been distributed, please check."

Although the questions were not difficult, there were too many of them. It took Xu Ling an hour and a half to finish them all.

The get out of class ended at 11:20, and it was now almost 1:00 in the afternoon. My stomach was already protesting strongly.

Xu Ling immediately rushed to the cafeteria without stopping.

However, he found out embarrassingly:
The canteen is closed!
Curtains were drawn on all the windows, and several aunts were cleaning with rags.

"Classmate? Why are you so late? Everything has been packed up." An auntie said somewhat reproachfully, "No matter what you are busy with, eating is the most important thing!"

Xu Ling nodded repeatedly, then turned around and prepared to go out.

Unexpectedly, the aunt stopped him again and said, "There is still food. I'll get you one, but you can't choose now."

I rely on!

Is it so good?
Xu Ling was immediately filled with gratitude and kept thanking his aunt.

Auntie just waved her hand.

While eating, although the taste was not as good as what he usually ate, Xu Ling felt very warm in his heart.

The lunch break was almost over, so Xu Ling simply didn't return to the dormitory. Instead, he went directly to the classroom for the afternoon class to continue doing exercises.

……

However, Xu Ling did not expect that his failure to return to the dormitory at noon would trigger crazy speculations from his roommates.

"Where did Xu Ling go? He didn't even come back at noon."

Qin Kai was the first to raise questions.

"Yes! Where is this person?" Yang Chaojie and Wang Rui noticed it then.

"Library?" Qin Kai asked tentatively.

"That shouldn't be the case. He came back the last time I went to the library at noon." Yang Chaojie immediately denied it.

"Then where else will he go?" Wang Rui was extremely confused.

"Maybe he went on a date?" Qin Kai made an outrageous guess.

"Do you think it's possible? That boy? A date? Does he understand the game?"

Yang Chaojie denied it again.

"No? Nothing will happen, right?" Wang Rui's tone became a little worried.

"It's very likely! He fainted in the dormitory before." Yang Chaojie immediately added.

"Try giving him a voice call." Qin Kai reacted immediately.

However, Xu Ling's phone was in do not disturb mode in the classroom, so how could he possibly answer the call?
Seeing that no one answered the call, the three of them were shocked and hurriedly notified Wang Xueqin.

But what’s the point of notifying Wang Xueqin?

Didn’t anyone answer her phone calls?

No one answered the call, and the roommates could no longer remain calm. Countless terrible guesses lingered in their minds.

Including but not limited to: fainting on the ground and then being run over by a carelessly driven dump truck.

……

And Xu Ling was still doing the questions silently.

(End of this chapter)