# Search results

1. ### Mutual Inductance between a coil and a long straight wire

Understood it now, thank you !
2. ### Mutual Inductance between a coil and a long straight wire

Also, the term I2*R that is actually the 'net' emf , right?
3. ### Mutual Inductance between a coil and a long straight wire

The current I2 in the equation , is it due to emf induced by mutual inductance?
4. ### Mutual Inductance between a coil and a long straight wire

In the given question they have not provided the dimensions of the coil so I assumed it to be very close to the wire and having negligible dimensions compared to the wire . Then EMF induced in the coil due to the current in the wire comes out as M*a . Which when divided by resistance gives...
5. ### B Q value of beta minus decay

That clears it for me , thank you !

7. ### Vernier Calipers problem

My approach to this problem was pretty simple and straight. There is no zero error here. 8 divisions of VS(Vernier scale)= 5 divisions on MS (Main Scale) hence 1 VS division = 5/8 mm . Now , MSR = 35 mm ( as zero of VS lies to the left of 36) Least count = 1mm - 5/8 mm = 3/8 mm Given in...
8. ### Surface Tension and Capillary Rise

According to this definition I am unable to understand why does surface tension acts tangentially to surface of contact of liquid and capillary tube. And is the force of surface tension balancing the adhesive forces which lead to capillary rise OR it is the reason behind the capillary rise?
9. ### Constancy of flux

This is an excerpt from a high school physics textbook. I don't understand the possible reason behind this statement. If we change something in the circuit say for example add a resistor , the current and hence the flux should change. Then why/how is this statement true?
10. ### Force due to induced charges

Okay so I think its clear to me now. What I was stuck on was the shielding part . Big conceptual error. Thanks! :D
11. ### Force due to induced charges

I thought about it but what still appears confusing is how exactly will the induced charge due to the electric field exert a force on the charge within because for that we must have an idea about the distribution of induced charge(due to the field) on the outside and inside of the hollow sphere...
12. ### Force due to induced charges

What I tried here is nothing mathematical. The charges in a cavity are sheilded from outside electric fields due to the conducting material. So what I could make out of it is that the forces acting on the charge myst be due to the induced charges on the internal cavity surface only and hence the...

14. ### Force due to induced charges

Could'nt solve it