Saved Bookmarks
| 1. |
A piece of wire of resistance 20 ohm is drawn out as that its length is increased to twice its original length .calculate new resistance.And resistivity |
|
Answer» Answer: A piece of wire of resistance 20Ω is DRAWN so that its length is increased to twice is original length. CALCULATE resistance of the wire in the new situation. R=ρlA or 20Ω=ρlA. When the length becomes 2L and cross-sectional AREA is A/2. Explanation: hope it HELPS to you |
|