麻烦,要英文的答案Define AC and DC.What is the difference between AC and DC?

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 00:11:26

麻烦,要英文的答案Define AC and DC.What is the difference between AC and DC?
麻烦,要英文的答案
Define AC and DC.What is the difference between AC and DC?

麻烦,要英文的答案Define AC and DC.What is the difference between AC and DC?
Define AC and DC. What is the difference between AC and DC?
定义交流和直流并说出他们的不同.
ANSWER:
DC stands for direct current, DC is the unidirectional flow of electric charge.
AC stands for alternating current, AC is the multi-directional flow of electric charge.
In alternating current, the movement of electric charge periodically reverses direction. In direct current (DC), the flow of electric charge is only in one direction.
Another difference between AC and DC involves the amount of energy it can carry. Each battery (DC) is designed to produce only one voltage, and that voltage of DC cannot travel very far until it begins to lose energy. AC voltage from a generator in a power plant can be bumped up or down in strength by another mechanism, called a transformer.
仅供参考,希望回答对你有帮助

麻烦,要英文的答案Define AC and DC.What is the difference between AC and DC? 求表达式B/B的值?#define A 3+2 #define B A*A 写出下列程序段的输出结果.#define A 10 #define B (A #define F(a) #define A B # define A 3 # define B(a) (( A + 1 )*a ) M x = 3*( A + B( 7 ) ) ;# define A 3# define B(a) (( A + 1 )*a )Mx = 3*( A + B( 7 ) ) ;这个要怎么解答麻烦翻译一下题,然后能否给出用英语回答的答案...1.Define either kinetic energy or potential energy.2.what's power and what are the SI units for power?3.what are the four phases of matter?4.what is the density?5what is pressure?6.A define定义函数我想用define定义绝对值函数Abs,即Abs(x)输出的是x的绝对值.我是这样定义的：#define Abs(x) (x>=0 x:(-x)).请问为什么对于两个整数a,b,我运行Abs(a-b)得到的是错误的答案? 这俩题的答案是几,怎么算的?第一题：#define N 3#define Y（n）（（N+1）*n）则执行语句：z=2*（N+Y（5+1));后,z的值为——第二题：#include #define PT 5.5#define S(X) PT*X*Xvoid main(){int a=1,b=2;printf(%4.1f/n,S(a 我又来了,还是英文物理,还是要英文答案.1. Define, in your own words, the following terms: amplitude wavelength, frequency,period.2. Give one example of a 电路题,有图,答案是AC,麻烦重点分析下A就OK了, EXT 的 Ext.define #define P 3 #define S(a) P*a*a main() {int ar; ar=s(3+5) printf( %d,ar) } 这个答案是29,不懂. 求AC米兰英文简介要英文的那些去CTRL+C别人的答案的别来了请问此题如何计算#define MOD(x,y) x％y若有宏定义：#define MOD(x,y) x％y则执行以下语句后的输出结果是int a=13,b=94；printf(″％d ″,MOD(b,a+4))；A.5B.7C.9D.11麻烦写出如何算出来的 #define LT(a,b) ((a) #define #define c语言预处理命令以下程序段中存在错误的是（） A） #define array_size 100int array1[array_size];B） #define PI 3.14159#define S(r) PI*(r)*(r)…area=S(3.2);C） #define PI 3.14159#define S(r) PI*(r)*(r)…area=S(a+b);D）