Home works and Assignments Online

Home » Class XII » Physics XII A

Physics XII A

SET:1

1. FIRST MONTHLY TEST QUESTIONS – DATE : 9-5-13

SET:2

1. CBSE QUESTIONS

1. WHAT IS THE POTENTIAL DUE TO AN ELCTRIC DIPOLE AT AN EQUATORIAL POINT.

2. DRAW THREE EQUI POTENTIAL SURFACES DUE TO A FIELD THAT UNIFORMLY INCREASES IN MAGNITUDE BUT REMAINS CONSTANT ALONG THE Z DIRECTION. HOW ARE THESE SURFACES DIFFERENT FROM THAT OF ACONSTANT ELECTRIC FIELD ALONG Z DIRECTION?

3. A PARALLEL PLATE CAPACITOR IS CHARGED BY A BATTERY AFTER SOME TIME THE BATTERY IS DISCONNECTED AND ADIELECTRIC SLAB OF DIELECTRIC CONSTANT CAPITAL K IS INSERTED BETWEEN THE PLATES. HOW WOULD THE CAPACITANCE, ELECTRIC FIELD AND ENERGY STORED IN THE CAPACITOR BE AFFECTED. JUSTIFY.

4. A HOLLOW METAL SPHERE OF RADIUS 10cm IS CHARGED SUCH THAT THE POTENTIAL ON THE SURFACE IS 5v ,WHAT IS THE POTENTIAL AT THE CENTRE OF THE SPHERE.

5. NET CAPACITANCE OF THREE IDENTICAL CAPACITORS IN SERIES IS TWO MICRO FARAD. WHAT WILL BE THEIR NET CAPACITANCE IF CONNECTED IN PARALLEL? FIND THE RATIO OF ENERGY STORED IN THE TWO CONFIGARATIONS IF THEY ARE BOTH CONNECTED TO THE SAME SOURCE.

 

Ms Padmaja M. G., PGT (Phy)


Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s

%d bloggers like this: