If a wire of resistance R is melted and recast to half of its length, then the new resistance of the wire will be -

Related MCQs

• If a copper wire is increased to double its length, its resistance will become –
• A wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be –
• Indicate the false statement about the resistance of a wire –
• If the length of a simple pendulum is halved then its period of oscillation is -
• The device which transfer the signal from low resistance region to high resistance region is –
• If electric resistance is to be decreased, then the number of resistances should be connected in –
• The resistance of a conductor is inversely proportional to its -
• When number of turns in a coil is trippled, without any change in the length of coil, its self inductance becomes?
• Safety fuse wire used in domestic electrical appliances is made of metal of low
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