Indeed because some leave headlights off and ignore that fact since there are street lights around.
Through gases as the bonds are tightly bound. Mechanical waves travel by vibrating through the medium so the more tight the bonds , the faster the waves.
Ionic bonds are formed between a cation (metal) and an anion (nonmetal)
Answer:A the two wire will attract each other
Explanation:
When current is flowing in a wire it is surrounded by magnetic field whose direction can be given by right hand thumb rule.
If current is in direction of your thumb then wrapping of fingers will give the direction of magnetic field.
If two wires with current in same direction flows then the combined magnetic field will be constructive in nature and thus they attract each other.
force on second wire due to first wire is
which will be towards the first wire
Elements of Group 17 are halogens.
Fluorine, Chlorine, Bromine, Iodine, Astatine