Look at the Fig. 4.4a. If the compass placed near the coil deflects: Draw an arrow on the diagram to show Class 8
mediumLook at the Fig. 4.4a. If the compass placed near the coil deflects: Draw an arrow on the diagram to show Class 8
Look at the Fig. 4.4a. If the compass placed near the coil deflects: Class 8
(i) Draw an arrow on the diagram to show the path of the electric current. Class 8
Answer:
The current flows from the positive terminal of the cell to end marked A of the coil, as shown by the arrow, then through the coil to end marked B, and then to the negative terminal of the cell as shown by the arrow.
(ii) Explain why the compass needle moves when current flows. Class 8
Answer:
The compass needle moves because the current flowing through the coil creates a magnetic field, which interacts with the needle's own magnetism, causing deflection.
(iii) Predict what would happen to the deflection if you reverse the battery terminals. Class 8
Answer:
When we reverse the battery terminals the poles of the coil electromagnet change. Therefore, the deflection in the compass needle also changes accordingly. It causes the compass needle to deflect in the opposite direction.