III.
Fill in the blanks
1._____
fuse is used in sensitive electric devices.
2.
An electromagnet in a______
magnet.
3. _______is used to protect houses from short circuit it works on the________
effect of electric current.
4.
The alloy used an the heating element in an electric toaster in______.
5.A bar of soft iron behaves as a magnet an long as current flows through the_______
IV.Write True or False in front of the statements given below:
1. The direction of current is always opposite to the direction of flow of current.____
2. The strength of an electromagnet can be increased by increasing the number of turns of wire
wounded on the core._____
3. Switch is absolutely necessary in an electric circuit.____
4. The magnetic strength in a conductor decrease with the increase in current.____
5. A magnetic device used for finding geographical direction is magnetic compass.___
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Answer:
the answer of second is true
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magnate hsvsgamabahnbs
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