(a). Predict the polarity of capacitor `C` as shown in Fig. 3.26 when poles `S` and `N` of two
Channel: Doubtnut
Date: 2020-07-26

(a). Predict the polarity of capacitor `C` as shown in Fig. 3.26 when poles `S` and `N` of two identical magnets approach the coil from opposote sides with equal velocity. The plane of the loop containing the capacitor is perpendicualr to the plane of the paper.     (b). A magnetic field perpendicular to the plane of a rectangular frame of wire is concentrated about `O`. If  the field decreases, will there be any emf induced in loop `1`? What about loop `2`? Explain why.