Recent content by Cazicami

Thanks, but why is the field tangential to that point and not radial around the loop?

Hi guys, sorry to bug again, but I am a wee bit stuck. Homework Statement A steady current of 1A flows down an infinitely long straight cylindrical wire of radius r=5mm Explain in what direction the magnetic field is pointing outside the wire Homework Equations The Biot Savart law -...

Thanks very much guys :)

Homework Statement Consider two concentric spherical metal shells of radii 2m and 4m, situated in free space and carrying uniform surface charge densities of 20nC/m2 and 5nC/m2 respectively. Find the capacitance C=Q/ΔV of the spherical capacitor formed by the shells. Here Q is the total...

Thanks, Sorry it was such a noob question, but I have now found it in my notes. Thanks so much for your help. Cazi

Homework Statement Consider a thick metal shell with inner radius a = 2cm and b = 4cm. The shell carries no net charge. A point charge of q = 3nC is placed at the centre of the shell. Find the total charged induced on the inner boundary of the shell. Find the total charge induced on the outer...

Homework Statement Given the circuit (Attached in image) Find the thevenin equivalent circuit. I know its a fairly simple thing, But I am not understanding where the lecturer is getting this answer from, unfortunately his solutions just state the voltage so I feel like I must be missing...

Sorry to trouble you then.

Hi guys, this is my first time posting, I'm studying physics at uni, in my third year and things are getting a bit tough, so basically my question is in relation to solving problem 1, (i included a picture...) I missed the class and don't really know what I'm doing. Any help would be appreciated.