A carboard tube is wrapped with two winding of insulated wire wound in opposite directions
Channel: Doubtnut
Date: 26/07/2020

A carboard tube is wrapped with two winding of insulated wire wound in opposite directions as shown in Fig. 3.24. Terminal `a and b` of winding `A` may be connected to a battery through a reversing switch. State whether the induced current in the resistor `R` from left to right or from right to left in the following cicumstances.   (a) The current in winding `A` is from `a to b` and is increasing.  (b) The current in winding `A` is from `b to a` and is decreasing.  ( c) The current in winding `A` is from `b to a` and is increasing.