NEET 2016 Phase 1 | Alternating Current Question 32 | Physics

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NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

A small signal voltage V(t) = V₀ sin$$\omega $$t is applied across an ideal capacitor C

Current $$I(t)$$ is in phase with voltage $$V(t)$$.

Current $$I(t)$$ leads voltage V(t) by 180^o

Current $$I(t)$$, legs voltage $$V(t)$$ by 90^o.

Over a full cycle the capacitor C foes not consume any energy from the voltage source.

NEET 2016 Phase 1

MCQ (Single Correct Answer)

-1

An inductor 20 mH, a capacitor 50 $$\mu F$$ and a resistor 40 $$\Omega $$ are connected in series across a source of emf V = 10 sin 340t. The power loss in A.C. circuit is

0.76 W

0.89 W

0.51 W

0.67 W

AIPMT 2015

MCQ (Single Correct Answer)

-1

A series R-C circuit is connected to an alternating voltage source. Consider two situations :
(a) When capacitor is air filled.
(b) When capacitor is mica filled.
Current through resistor is $$I$$ and voltage across capacitor is $$V$$ then

$${i_a} > {i_b}$$

$${V_a} = {V_b}$$

$${V_a} < {V_b}$$

$${V_a} > {V_b}$$

AIPMT 2015 Cancelled Paper

MCQ (Single Correct Answer)

-1

A resistance 'R' draws power 'P' when connected to an AC source. If an inductance is now placed in series with the resistance, such that the impedance of the circuit becomes 'Z'. the power drawn will be

$$P\left( {{R \over Z}} \right)$$

$$P{\left( {{R \over Z}} \right)^2}$$

$$P\sqrt {{R \over Z}} $$

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Biology

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Human Health and Diseases Body Fluids and Its Circulation Locomotion and Movement Neural Control and Coordination Reproduction in Organisms Reproductive Health Structural Organisation in Animals Digestion and Absorption Excretory Products and Their Elimination Chemical Coordination and Integration Human Reproduction Animal Kingdom Breathing and Exchange of Gases Evolution