Answer:
C, D, B and A.
Explanation:
Electromagnet in option C is strongest because it has an iron core and the largest current as compared to other solenoids, following by D and then B whereas solenoid A is the weakest because of the absence of an iron core and has the smallest current. Solenoid having iron core is the strongest solenoid because the core produces more strong magnetic field as compared to no iron core.
There are Mainly Five basic Components of a computer system.
Input Unit.
Output unit.
Memory Unit.
Control unit.
Arithmetic and Logic Unit.
Answer:
Java variable is the name of a group of data value stored in memory that can change its value but cannot change its type during the program's execution
Explanation:
Generally, a variable is a temporary location in the memory where data are stored in a computer program. Values in the variable can always be change during the course of program execution.
The equal sign ( = ) is use to assign and identify a variable. The value to be stored in the variable is always at the right of the equal sign, while the variable name is always at the left of the equal sign.
True they had to be developed in a special way in a dark room with several chemicals.
