NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics: Questions 806  810 of 2320
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Question number: 806
» 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: 807
» 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.  1 V  
b.  4V  
c.  3 V  
d.  2 V 
Question number: 808
» 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.  350 V  
b.  300 V  
c.  500 V  
d.  250 V 
Question number: 809
» Experimental Skills » Screw Gauge
Question
A cricket bat is cut at the location of its center of mass as shown in the fig. Then
Choices
Choice (4)  Response  

a.  The handle piece will have larger mass  
b.  The bottom piece will have larger mass  
c.  Mass of handle piece is double the mass of bottom piece  
d.  The two pieces will have the same mass 
Question number: 810
» Experimental Skills » Screw Gauge
Question
Two particles of masses m _{l} and m _{2} initially at rest start moving towards each other under their mutual force m attraction. The speed of the center of mass at any time u when they are at a distance r apart, is
Choices
Choice (4)  Response  

a.  zero  
b. 
 
c. 
 
d. 
