Use Lenz's law to answer the following questions concerning the direction of induced currents. Express your answers in terms of the letter labels a and b in each part of the figure below.   (a) What is the direction of the induced current in the resistor R in Figure a when the bar magnet is moved to the left?   (b) What is the direction of the current induced in the resistor R after the switch S in Figure b is closed?   (c) What is the direction of the induced current in the resistor R when the current I in Figure c decreases rapidly to zero?

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Bar Magnet

In physics, magnetism is a phenomenon exhibited by a magnetic substance that exerts either attractive or repulsive force. A bar magnet is either a rectangular or round and hollow fit comprised of ferromagnetic materials and has a fanciful attractive field surrounded by it.