1.	The most important safety method used for protecting home appliances from short circuiting or overloading is ?
	Use of fuse
	Use of electric meter
	Earthing
	Use of stabilizers
	Answer: Use of fuse Explanation: The most important safety method used for protecting home appliances for short circuiting or over loading is the electric fuse. This is a safety device having thin wire of short length made of tin (25%) and the lead (75%) alloy having low melting point around 200 degree Celsius. The fuse wire is of chosen, thickness, so as to fix its resistance and hence amount of hitting on passage of a particular amount of current. Whenever current through the fuse exceeds the set limit, the fuse wire melts and breaks the circuit. This saves the main circuit components from damage.
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2.	A magnetic field line is used to find the direction of ?
	A bar magnet
	Magnetic field
	A compass needle
	South-north
	Answer: Magnetic field Explanation:
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