NEET Physics: Questions 801  805 of 2142
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Question number: 801
» Electromagnetic Induction & Alternating Currents » AC Generator and Transformer
Question
A current of 5A is flowing at 220 V in the primary coil of a transformer. If the voltage produced in the secondary coil is 2200V and 50 % of power is lost, then the current in the secondary coil will be 
Choices
Choice (4)  Response  

a.  0.25A 

b.  0.025A 

c.  5A 

d.  2.5A 

Question number: 802
» Laws of Motion » Force and Inertia
Question
What is the tension in a rod of length L and mass M at a distance y from F, when the rod is acted on by two unequal forces F1 and F2 (
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 803
» Electromagnetic Induction & Alternating Currents » Peak and RMS Value of AC
Question
An alternating current is given by the equation . The r. m. s. current is given by
Choices
Choice (4)  Response  

a. 


b. 


c. 


d. 


Question number: 804
» Electromagnetic Induction & Alternating Currents » Induced EMF and Current
Question
A current increases uniformly from zero to one ampere in 0.01 second, in a coil of inductance 10 mH. The induced e. m. f. will be –
Choices
Choice (4)  Response  

a.  3 V 

b.  4V 

c.  1 V 

d.  2 V 

Question number: 805
» Electromagnetic Induction & Alternating Currents » Reactance and Impedance
Question
An alternating voltage is connected in series with a resistance R and an inductance L. If the potential drop across the resistance is 200 V and across the inductance is 150 V, then the applied voltage is
Choices
Choice (4)  Response  

a.  500 V 

b.  350 V 

c.  250 V 

d.  300 V 
