Consider the following:1) Electric current flowing in a conducting wire.2) A moving charged belt3) An electron beam in a cathode-ray tube4) Electron movement in a vacuum tubeWhich of the above are examples of convection current?

Consider the following:1) Electric current flowing in a conducting wir

1.	Consider the following:1) Electric current flowing in a conducting wire.2) A moving charged belt3) An electron beam in a cathode-ray tube4) Electron movement in a vacuum tubeWhich of the above are examples of convection current?
A.	2, 3 and 4 only
B.	1, 2 and 4 only
C.	1 and 3only
D.	1, 2, 3 and 4
Answer» B. 1, 2 and 4 only

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Consider the following:1) Electric current flowing in a conducting wire.2) A moving charged belt3) An electron beam in a cathode-ray tube4) Electron movement in a vacuum tubeWhich of the above are examples of convection current?

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