The equation of current in a purely inductive circuit is 5 sin(49 
-30°). If the inductance is 30 mH then the equation for the voltage across the inductor, will be: 
A
147sin(49 
t - 30°)
t - 30°)
B
1.47sin(49 
t + 60°)
t + 60°)
C
23.1sin(49 
t - 30°)
t - 30°)
D
23.1sin(49 
t + 60°)
t + 60°)
Text Solution
Verified by ExpertsThe correct answer is:
D
Voltage will lead current by 90°.
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