In induction type voltmeters and ammeters, the instantaneous torque T – McqOptions

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1.	In induction type voltmeters and ammeters, the instantaneous torque T is:
A.	∝ (φ1i1 + φ2i2)
B.	∝ (φ1i2 - φ2i1)
C.	∝ (φ1i2 + φ2i1)
D.	∝ (φ1i1 - φ2i2)
Answer» C. ∝ (φ1i2 + φ2i1)

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