IV. Match the columns:
Column A
1. Electromagnet
2. Protective device
3. Electric bulb
Column B
(a) Electric fuse
(b) Magnetic compass
(c) Joule heating
(d) Solenoid with iron core
(e) Source of current
(f) Electromagnetis
(g) Flament
4. Electric iron
5. Sailors
6. Battery
7. Electric bell
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Explanation:
electromagnetic
electric fuse
filament
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