PHYSICS
JAMB 2004 - Question 27
Physics 2004 JAMB Past Questions - Question 27: the energy stored in an inductor of inductance 5mh when a current of 6A flows through it is
Choose the correct answers from the options given.
A:
B:
C:
D:
Correct Answer
B
Explanation
The energy stored in an inductor can be calculated using the formula for the energy stored in an inductor:
Energy (W) = (1/2) * L * I^2
Where:
W = Energy stored in the inductor (in joules)
L = Inductance of the inductor (in henries, H)
I = Current flowing through the inductor (in amperes, A)
In your case, the inductance (L) is given as 5 mH, which is equivalent to 0.005 H, and the current (I) is 6 A. Plug these values into the formula:
W = (1/2) * (0.005 H) * (6 A)^2
W = (1/2) * 0.005 H * 36 A^2
W = 0.5 * 0.005 H * 36 A^2
W = 0.5 * 0.18 H*A^2
W = 0.09 joules
So, the energy stored in the inductor with an inductance of 5 mH when a current of 6 A flows through it is 0.09 joules.
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