(A) The brushes
(B) The armature
(C) The commutator
(D) The split rings
What is the SI unit of e.m.f?
(A) NC-1
(B) NC
(C) CJ
(D) JC-1
If air is medium between two charges then the value of K in System International unit will be?
(A) 9×109Nm2C-2
(B) 9×10-9Nm2C-2
(C) 9×10-12Nm2C-2
(D) 9×1010Nm2C-2
What is the equation of electric intensity?
(A) E=q/F
(B) q=EF
(C) E=F/q
(D) F=-Eq
The refractive index of water is?
(A) 2.42
(B) 1.00
(C) 2.21
(D) 1.33
The intensity level of rusting of leaves is?
(A) 0 dB
(B) 30 dB
(C) 10 dB
(D) 40 dB
The equation for the Time period of Simple Pendulum is?
(A) T=2√l/g
(B) T=2ℼ√l/g
(C) T=2√g/k
(D) None of the above
What is the equation of Hook’s Law?
(A) F=x/K
(B) F=-Kx
(C) x=-FK
(D) K=-x/F