DC Circuit MCQ Job Interview Exam Higher Study Admission Questions Answers part5

Wednesday, 25 December 2013

DC Circuit MCQ Job Interview Exam Higher Study Admission Questions Answers part5


41.    Three equal resistors connected in series across a source of e.m.f together dissipate 10 W. What would be the power dissipated if the same resistors are connected in parallel across the same source of e.m.f? 90W


42.In a circuit, two cells of 1.5 V and 2 V e.m.f. having internal resistances of 1Ω and 2 Ω respectively are connected in parallel so as to send current in the same direction through an external resistance of 5 Ω. The circuit current is 5/17 A.


43.  A standard 4o W tube light is in parallel with a room heater and both are connected to main supply line. What will happen when light is switched off?  The heater output will remain same.


 

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