If (vector) B is added to (vector) C=3.0i + 4.0j, the result is a vector in the positive direction of the y axis, with a magnitude equal to that of (vector) C. What is magniatude of (vector) B?

Explanation:

given,

magnitude of vector C

Sum of vector B and vector C is equal to magnitude of vector C in y-direction

now, vector B is equal to

Hence, the given vector B is equal to  

when the use of electricity burdens the fuse and miniarure circuit beakers and there is a possibility of a fuse then they automatically cut off the electricity supply to your homes and after you fix the problem u jzt switch it on and it continues the supply of electricity to ur homes