Electromagnetic Induction & Alternating Currents (AIIMS (All India Institute of Medical Sciences) Physics): Questions 38  43 of 51
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Question number: 38
» Electromagnetic Induction & Alternating Currents » Induced EMF and Current
Question
A conducting ring of radius 1 meter is placed in a uniform magnetic field B of 0.02 T, oscillating with frequency 150 Hz with its plane at right angles to magnetic field. What will be the induced electric field?
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 39
» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance
Question
The of mutual inductance of two coils when magnetic flux changes by and current changes by 0.02 A is –
Choices
Choice (4)  Response  

a.  6 H 

b.  12 H 

c.  9 H 

d.  3 H 

Question number: 40
» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance
Question
The of mutual inductance of two coils when magnetic flux changes by and current changes by 0.08 A is –
Choices
Choice (4)  Response  

a.  2 H 

b.  0.5 H 

c.  0.4 H 

d.  1 H 

Question number: 41
» Electromagnetic Induction & Alternating Currents » Reactance and Impedance
Question
The reactance of an inductance of 0.07 H is . Than the frequency of a. c is –
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Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 42
» Electromagnetic Induction & Alternating Currents » Reactance and Impedance
Appeared in Year: 2006
Question
A coil of inductive reactance has a resistance of . It is placed in series with a condenser of capacitative reactance . The combination is connected to an a. c. source of 110 volt. The power factor of the circuit is – (AIPMT)
Choices
Choice (4)  Response  

a. 


b.  0.80 

c.  0.64 

d.  0.33 

Question number: 43
» Electromagnetic Induction & Alternating Currents » Self and Mutual Inductance
Question
A choke coil consists of 150 turns wound on a high permeability core. If the relative permeability is 3540, permeability of free space is , coil length is 5 cm and cross section area is then the value of the inductance of coil is –
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 

