In AC circuit the emf (e) and the current (i) at any instant are given respectively by

e=Eo sin ωt

i=Iosin (ωt-ϕ)

The average power in the circuit over one cycle of AC is 

(a)EoIo2

(b) EoIo2sin ϕ

(c) EoIo2cos ϕ

(d) EoIo

 

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Power dissipated in an L-C-R series circuit connected to an AC source of emf ε is 

(a) ε2RR2+Lω-1Cω2

(b) ε2R2+Lω-1Cω2R

(c) ε2R2+Lω-1Cω2R

(d) ε2RR2+Lω-1Cω2

Concept Questions :-

Different types of AC Circuits
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In the given circuit the reading of voltmeter V1 and V2 are 300V each. The reading to the voltmeter V3 and ammeter A are respectively :

(a) 150V, 2.2A                                              (b) 220V, 2.2A

(c) 220V, 2.0A                                              (d) 100V, 2.0A

Concept Questions :-

Different types of AC Circuits
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A coil has resistance 30 Ω and inductive reactance 20 Ω at 50 Hz frequency. If an AC source of 200 V, 100 Hz, is connected across the coil, the current in the coil will be:

 1. 4.0 A                                           

 2. 8.0 A

 3. 2013A                                         

 4. 2.0 A

Concept Questions :-

Different types of AC Circuits
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The rms value of potential difference V shown in the figure is

                        

(a) Vo                                                     (b) Vo2

(c)Vo2                                                     (d) Vo3   

Concept Questions :-

Rms and average values
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


An AC voltage is applied to a resistance R and an inductor L in series. If R and the inductive reactance are both equal to 3Ω, the phase difference between the applied voltage and the current in the circuit is

(a) π/4                                                 (b) π/2

(c) zero                                                  (d) π/6

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The current  in a coil varies with time as shown in the figure. The variation of induced emf with time would be

                                                   

                                                                 

                  (a)                                                                                         (b)

 

                                                                 

                   (c)                                                                                             (d)

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In an AC circuit an alternating voltage e=200 2 sin 100t volt is connected to a capacitor 1 μF. The rms value of the current in the circuit is

(a) 100 mA

(b) 200 mA

(c) 20 mA

(d) 10 mA

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


In a coil of resistance 10Ω, the induced

current developed by changing magnetic

flux through it is shown in the figure as a 

function of time. The magnitude of change

in flux through the coil in weber is-

(a) 8

(b) 2

(c)6

(d)4

Concept Questions :-

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The instantaneous values of alternating

current and voltages in a circuit are given

as 

i=12sin(100πt) amperee=12sin(100πt+π/3) volt

The average power in Watts consumed in the

circuit is

(a) 14

(b) 34

(c) 12 

(d) 18

To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: