Electrical flux is the measure of the electric field through a given surface although an electrical field cannot flow in itself. It is a way to describe the strength of the electric field at any distance from the charge that causes the field.
At any point in space, the electric field E will exert a force on an electrical charge. The electric field shall be proportional to the voltage gradient.
Dimensional Formula of Electric Flux
The dimensional formula of electric flux is expressed by,
[M1 L3 T-3 I-1]
M = Mass
I = Current
L = Length
T = Time
Electric Flux (ΦE) = E × S × cos θ -------------------------- (1)
E = Magnitude of the electric field
S = Surface Area
The dimensional formula of area (S) = [M0 L2 T0] --------------------------(2)
Since, Electric Field = [Force × Charge-1] . . . (3)
The Dimensional Formula of,
substitute equation (4) and (5) into equation (3) the result obtained is,
Electric Field = [M1 L1 T-2] × [I1 T1]-1
Therefore, The dimensional formula of Electric Field = [M1 L1 T-3 I-1] -------(6)
substitute equation (2) and (6) in equation (1) we observe,
⇒ Electric Flux = E × S × cos θ
Or, ΦE = [M1 L1 T-3 I-1] × [M0 L2 T0] = [M1 L3 T-3 I-1]
Thus, the electric flux is dimensionally shown as [M1 L3 T-3 I-1].
Eligibility Criteria for IIT JEE
JEE Main has a set of eligibility criteria and it is expected from candidates that they are well informed about it. Candidates must look at the eligibility criteria before appearing for the exam; the details regarding the eligibility criteria are available on the official website of NTA JEE and in its brochure. Or you can read about it below.
Age Limit: JEE mains has set no age bar for candidates who are interested to appear for the exams.
Educational Qualification: Candidates must have completed their class 12 from a board recognized by the central government or state government. If candidates have qualified for an exam equivalent to class then also the candidate is eligible to appear for the exam.
Number of Attempts: candidates have 3 attempts to clear the exam within the three consecutive years from the year of passing class 12.
Compulsory Subjects in Qualifying Exams: Physics, Mathematics, and Chemistry/Biology/biotechnology/technical vocational subjects are compulsory subjects for B. Tech.
Physics, chemistry, and mathematics are compulsory subjects for B.Arch.
Mathematics is compulsory for B.Plan.
Cracking an exam of this magnitude is a hardworking job and it requires dedication, determination, and planning. Applicants are advised to have a practical plan of preparation to crack JEE Mains and JEE Advanced. A practical timetable is a necessity to cover the vast syllabus of JEE Main. Students must make their timetable that suits their methods of studying and should strictly follow. The students are advised to practice as many sample papers from reference books as possible and sample papers provided online.
Students must carefully select the books they are gonna study from. Check that the books they are using have an updated syllabus and have sufficient study material. Revision is an important part of the preparation in order to qualify the IIT JEE Mains. A good revision session before exams boost up students’ confidence and help them to remain calm. A calm mind before the exam helps students to control their nerves and be confident.