State, with reasons, whether the following statements are True or False:
 i) Kirchoff’s voltage law is valid only for passive element circuits.
ii) In a series resonant circuit, minimum current flows at resonance frequency.
iii) Higher form factor implies better rectification efficiency.
iv) Class A amplifier provides distortion free operation at the cost of efficiency.
v) LC oscillators are not preferred for generating low frequencies.
vi) Operational amplifier is the only type of amplifier available in IC form.
vii) In a regulator IC, the head room should be as large as possible.
viii)It is possible to build any gate using combination of only OR gates.
ix) D-latch uses edge triggering.
x) Mod-7 counter requires 4 flip-flops.

i) False. Kirchoff's voltage law is valid for all circuits, whether they contain passive elements (resistors, capacitors, inductors) or active elements (such as transistors).
ii) True. In a series resonant circuit, minimum current flows at resonance frequency due to maximum impedance.
iii) False. Higher form factor implies poorer rectification efficiency. Form factor is _________ ________ __________ ____ __________ ____ _______ _________ ___ ________ _________.
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