Plz answer 4,5,8&9:
4. Two bulbs have rating 100 W, 200 and 60 W, 220 V. Which one has a greater resistance ?
5. Why is tungsten not used as a fuse wire ?
8. Current is a scalar quantity but still a direction is associated with it. Comment on this statment.
Dear Student,
4.
We know the relation,
5. Tungsten is not used as fuse wire because it has a high melting point and if we use it the defiantly the fuse will not work and in case of high voltage the bulbs and appliances will get fused.
8.