AP EAMCET201823 Apr 2018Morning ShiftPhysicsAlternating CurrentActual
The rms value of emf is given by E=(8 t+6 t) volt is
Options
- A5 2 ~V
- B7 2 ~V
- C10 V
- D10 2 ~V
Correct answer
A. 5 2 ~V
Step-by-step solution
aligned E=(8 t & +6 t) & =(A t-A t) aligned where, A =8 and A =6 . aligned A^2 ( ^2 + ^2 ) & =8^2+6^2=100 A & =10 rms value, E_ rms & = A 2 = 10 2 = 5 2 2 =5 2 aligned