Teaching UP B.Ed (Paper 1 & 2) Mock Test 2025 General Science Physics Current Electricity

ଇଲେକ୍ଟ୍ରିକ୍ ବଲ୍ବରେ ଫିଲାମେଣ୍ଟ କେଉଁଥିରେ ତିଆରି ହୋଇଛି ?

1
ନିକ୍ରୋମ୍
2
ଟଙ୍ଗଷ୍ଟେନ୍ 
3
ଲିଡ୍ 
4
ଆଲୁମିନିୟମ୍ 
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