CBSE 12th Physics

Last 5 year solutions (2011 - 2015)

Prepare for CBSE class 12 Physics board paper with the help of previous years (2011-2015) solved question papers.
4 video solutions

CBSE Board Papers Class 12 - 2014 - Physics - Question 23
by added on Mon Feb 16 06:52:57 UTC 2015 459 views
Question - A resistance of R ---p draws current from a potentiometer as shown in the figure. The potentiometer has a total resistance R 0 ----. A voltage V is supplied to the potentiometer. Derive an expression for the voltage across R when the sliding contact is in the middle of the potentiometer. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 12 - 2014 - Physics - Question 11
by added on Mon Feb 16 07:54:03 UTC 2015 301 views
Question - A cell of emf 'E' and internal resistance ‘r’ is connected across a variable resistor 'R'. Plot a graph showing variation of terminal voltage 'V' of the cell versus the current 'I'. Using the plot, show how the emf of the cell and its internal resistance can be determined. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 12 - 2014 - Physics - Question 8
by added on Mon Feb 16 07:46:12 UTC 2015 268 views
Question - Why is the use of a.c. voltage preferred over d.c. voltage? Give two reasons. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 

CBSE Board Papers Class 12 - 2014 - Physics - Question 10
by added on Mon Feb 16 07:55:54 UTC 2015 128 views
Question - Estimate the average drift speed of conduction electrons in a copper wire of cross-sectional area 2.5 x 10^-7 m^2 carrying a current of 2.7 A. Assume the density of conduction electrons to be 9 x 10^28 m^-3. Vedantu - Your Personal Teacher Online - Get an clear edge over other students by constant revision of important topics with an awesome teacher. - Get your doubts and questions resolved instantly by booking an instant live session - Prepare for competitive exams with our exam courses and achieve your goal - Skipped a topic in tuitions? Learn it on Vedantu by taking our topic courses

 
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