Question

?S) The diagram shows a solenoid of length 70cm connected to power supply of 10 v. The magnetic field at its center is 3.6 mT. If the total resistance of the circuit 2 a the number of turns of the solenoid is (use ?.-4m×10-,Wh/An): (A) 401 (D) 40 (6) 250(C) 40127 10v (E) 200 19) The wheatstone bridge circuit shown is balanced when R1-600 ? and R The resistances of Rs and Ra could be 2-400 ?. (A) R,-802; R4-120 ? (B) R3 = 400 ?; R4 400 ? (D) R3-4002; Ra Ra R4.600 ? (E) R3-1200 ?; R4-600 ? 20) In the circuit shown in the figure below, the ammeter reading is zero when the X is switch S is closed. If the batteries are of zero internal resistance, the value of resistance 400 ? (A) 100 ? (B) 600 ? (C) 300 ? (D) 400 ? (E) 200 ? 4V 6V 600 ? of Applied Physics and Astronomy Physics 2 lab Jnat Exam- Summer 17/18