Question

Disha was given two thin wires A and B in science laboratory. The teacher asked her to find out which wire was "fuse wire" and which one was "nichrome wire". Disha was given batteries of 3 V and 12 V and some connecting wires. The teachers also advised her to switch off fan while performing the activities and take necessary precautions to avoid burns. Disha performed the activities for testing and concluded that wire A is nichrome wire, whereas wire B is fuse wire.
On the basis of above information, answer the following questions
(i) Describe the activity which Disha performed to conclude that wire A is nichrome wire.
(ii) Describe the activity which Disha performed to conclude that wire B is fuse wire.

Answer 1

Nisha connected wire a and b with both the batteries. when wire a and b were connected with 3v battery no difference was seen but when they were connected to 12v battery the wire b melted because it has less resistance to wire a. Nichrome wire has a high resistance whereas fuse wire is of low resistance. 

PLEASE MARK ME BRAINLIEST