Saved Bookmarks
| 1. |
How much will be heat devoloped if 0.2A current flows through a conductor of resistance 200 ohm for 5minutes? |
|
Answer» Explanation:Heat dissipated in a RESISTANCE is given by H=i 2 ×r×t For OPTION A H=5 2 ×10×2×60=30000W For option B H=4 2 ×10×3×60=28800W For option C H=3 2 ×10×6×60=32400W For option D H=2 2 ×10×5×60=12000W from calculation we can see the heat Which is MAXIMUM in CASE of 3 ampere current for 6 minutes. |
|