Question 5 The two panels of the figure show a ctrcuit consisting of a battery a

Question

Question 5 The two panels of the figure show a ctrcuit consisting of a battery and a long resistive wire.Part of the witre tn each circuit in (b), the directon of flow of the electron current is shown. (b) Repeat for figure (b).Explain your answer in detail wire.Part of the wire in each circuit is in a unif orm magnetic field pointing out of the page. Im figure (a), the arrow shows the direction of the conventinal current (a) In figure (a), what is the diretion of the force on those parts of the wire that are in the magnetic field? Carefully explain your answer. t (b)

Explanation / Answer

To determine the direction of force, all we need to apply is Fleming's left hand rule as shown below

a)

Dots represent field coming outside the page.

If we hold our left hand as shown, then rotate it such a way that index finger (Magnetic field) is towards us, middle finger (current) towards right, thumb will point downwards. Hence force is acting downwards.

b)

As conventional current flows opposite to electron current, both the diagrams are actually, same. Hence, force in second case will also be downwards.

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