there are two other wires each having resistance lamda per unit
A wire frame of area 4.0 × 10^−4 m^2 and resistance 20 Ω is suspended freely from a 0.40 m long thread. There is a uniform magnetic field of 0.8 T and the plane of wire-frame is made to oscillate under gravity by displacing it through 2×10^−2 m from its initial position along the direction of magnetic field. The plane of the frame is always along the direction of thread and does not rotate about it . What is the induced EMF in wire-frame us a function of time ? Also find the maximum current in the frame.
07
Sep
A wire frame of area 4.0 × 10^−4 m^2 and resistance 20 Ω is suspended freely from a 0.40 m long thread. There is a uniform magnetic field of 0.8 T and the plane of wire-frame is made to oscillate under gravity by displacing it through 2×10^−2 m from its initial position along the direction [...]
A long straight wire carries a current I 0. At distances a and b (a+b) from it, there are two other wires each having resistance lamda per unit, parallel to the former one, which are interconnected by a resistance R (Fig). A connector slides without friction along the wires with a constant velocity v. Assuming the resistances of the wires, the conductor, the sliding contacts, and the self-inductance of the frame to be negligable, calculate force F required to maintain velocity of the rod constant as function of time t .
07
Sep
A long straight wire carries a current I 0. At distances a and b (a+b) from it, there are two other wires each having resistance lamda per unit, parallel to the former one, which are interconnected by a resistance R (Fig). A connector slides without friction along the wires with a constant velocity v. Assuming [...]