(I) Fill in the blanks :
1. The combination of two or more cells is called a
2. The coil of wire used in electric heaters is called an
3. A current carrying coil of an insulated wire wrapped around a piece of iron is
called an
4. Magnetic effect of Electric current was discovered by a scientist named.
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Answer:
1-Battery
2-resistor
3-electromagnet
4-hans Cristian orested
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