Question
A cylindrical wire of non-uniform cross-section has its
radius increasing linearly from R to 3R over its length L. If a constant current I flows through it, find the average drift velocity of electrons in terms of current and radial variation.Solution
Let the radius of the cylindrical wire at a distance x from the end with radius R be r(x). Since the radius increases linearly from R to 3R over the length L, we can write the radius as a function of x:
12, 13, 27, 82, 329, ?
98, 89, 114, 50, 194, ?
17 , 37 , 79 , 165 , ? , 689
- What will come in place of (?), in the given number series.
100, 95, 85, 70, ?, 25 137, 130, ?, 95, 67, 32
10, 15, 25, 35, ?, 65
What will come in place of (?) question mark in the given number series.
12, 27, 44, 65, ?, 139
Find the missing number in the given number series.
5, 9, 18, 34, 59, ?4, 9, 24, 69, ?, 609
Choose the missing term?
B, D, F, I, L, P, ?