please help me with these questions

Problem: You place a long straight wire on top of your compass, and the wire is a height of 6.00 millimeters above the compass needle. If the conventional current in the wire is I = 0.25 A and runs to the right as shown, the approximate angle the needle deflects away from North is: [Assume that the magnitude of the Earth's magnetic field is 2 x 10-S T] North O 22.69 degrees to the west O 22.69 degrees to the east 11.81 degrees to the east 11.81 degrees to the west Problem: The incomplete circuit below shows the surface charge distribution after static equilibrium has been reached. The battery provides an emf = 1.5 V What is the potential difference, VB-VA? +4+4 E-0 +44+ 0 1.5 V 0 0.00 V 0 -1.5 V O VB-VA is not well defined because there is no conductor between points A and BProblem: Two infinitely long, current-carrying wires cross at right angles at the origin. ltine wire is on the rat-axis, carrying current I in the +3: direction. The other is on the yaxis. carrying current I in the +1! direction. Within the icy plane, where is the magnetic field equal to zero? Along the line 3-; = 1,r B Is nonzero everywhere in the in; plane. Along the lines it = I1; and X = -I'f. Along the line it = 5r Problem: An electron is moving horizontally to the right with speed 4 3-: 1o\" nus. What is the magnetic field due to this moving electron at location P1 in the Figure? Each location is 8 cm From the electron. and the angle is 31". Illl:. .l'. .l H =' H 1*, ---------------- _ -ju:_ ------ 1*. 4.15 x 1o'1'5J T [into the page) 5.1.5 3-: 11:21'\"Elr T [Into the page) 1.50 3-: 10-13 T (towards the right] d T 5.1.5 >: It?\"1 T [out of the page} Problem: In the diagram below the capacitor is initially uncharged. Which graph shows the magnitude of the potential difference across the light bulb filament while charging? A B C D O Graph A O Graph B O Graph C O Graph DProblem: In the circuit shown in the figure below the emf of the battery is 6.0 V. Resistor Ry has a resistance of 27 2 Resistor R2 has a resistance of 47 2 Resistor R3 has a resistance of 54 2. A steady current flows through the circuit. What is the conventional current through R3? 0 0.35 amperes 0 0.47 amperes 0 0.047 amperes 0 0.084 amperes Problem: Consider the current-carrying loop shown in the figure below, formed of radial lines and segments of circles whose centers are at point P. Find the magnitude and direction of the magnetic field at P. Mol 1 8 6 -=) (into the page) Mol, 1 12 -7) (out of the page) Mol 1 Ax 'b -) (into the page) a 72 ) (out of the page) D The magnetic field at P is equal to zero