JEE MAIN - Physics (2022 - 25th June Morning Shift - No. 26)
The current in a coil of self inductance 2.0 H is increasing according to I = 2 sin(t2) A. The amount of energy spent during the period when current changes from 0 to 2 A is ____________ J.
คำตอบ
4
คำอธิบาย
$$U = {1 \over 2}L{I^2}$$
$$ = {1 \over 2}2 \times {2^2} = 4$$ J