Which item does not prevent electrical accidents?

a. superconductor

b. ground-fault circuit interrupter

c. fuse

d. circuit breaker

Hello there!

The fuse, circuit breaker and ground-fault circuit interrupter are things that broke when the current is high enough, cutting the circuit in the process and prevent possible electrical accidents.

A superconductor, for the other hand, is a very good conductor with almost zero resistance, this has nothing to help prevent electrical accidents, it is just a very very good conductor.

when insulating materials rub against each other, they may become electrically charged . electrons , which are negatively charged, may be 'rubbed off' one material and on to the other. the material that gains electrons becomes negatively charged. the material that loses electrons is left with a positive charge.

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards