A 230V 4kW load is to be wired in non-armoured single-core 70 "C thermoplastic
insulated copper conductors wired in steel conduit installed on the surface some
25 metres from the distribution board. Three other similar circuits are installed in the
same conduit which passes through an area where the ambient temperature reaches
40 °C. Calculate the cross-sectional area of cable required if protection is by a BS 88-2
fuse. Show all working.

what type of charge does it have? negative

attach the statements so i can answer : )

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.