MCQOPTIONS
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| 1. |
The diagram shows a plotting compass placed above a copper wire when there is no current flowing in the wire. What happens to the compass needle when a large direct current flows from point A to point B? |
| A. | The compass needle points towards the right. |
| B. | The compass needle points towards the left. |
| C. | The compass needle points towards upward. |
| D. | The compass needle points toward downward. |
| Answer» E. | |