(A) Become zero
(B) Increase
(C) remain the same
(D) Decrease
Answer: (D) Decrease
If a dielectric is placed in an electric field, the field strength will decrease.
Category: Electronics MCQs
The phenomenon in which a changing current in coil induces an emf in it self is called:
(A) Self induction
(B) Mutual induction
(C) Electromagnetic induction
(D) Electrification
Answer: (A) Self induction
The phenomenon in which a changing current in coil induces an emf in it self is called self induction.
Unit of Inductance is?
(A) Watt
(B) Volt
(C) Henry
(D) Ohm
Answer: (C) Henry
Unit of Inductance is Henry.
By connecting capacitor in parallel the total capacitance:
(A) Decreases
(B) Increases
(C) Not affected
(D) None of these
Answer: (B) Increases
By connecting capacitor in parallel the total capacitance increases.
A transformer which increases the ac voltage is called _______ .
(A) Step-up transformer
(B) Step-down transformer
(C) Slip ring
(D) None of these
Answer: (A) Step-up transformer
A transformer which increases the ac voltage is called step-up transformer.