Find the direction of the current in the resistor R in the figure shown when the

Question

Find the direction of the current in the resistor R in the figure shown when the following steps are taken in the order given, the switch is chased, After the switch is closed for several minutes, (18) the variable r in with the battery is decreased, containing the resistor k moved to the left, Go) the containing the variable resistor is mewed to left, (21) the switch is opened. A simple circuit is made up of an inductor which is a simple air solenoid and a light bulb in series. the switch is closed and the bulb glows steadily. As an iron rod is inserted into the interior

Explanation / Answer

When switch is closed current flows from left to right in the R.

When the switch is closed for more time no current passes through R as flux linked to it does not change.

When resistance decreases again current flows from left to right

when circuit containing resistance R is moved to left current againn flows from left to right according to Lenz law.

when circuit containing variable resistance is moved to left current flows from right to left in R

When switch is opened again current flows from left to right in R

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