A sample garden syringe used to produce a jet of water consists of a piston of area 4cm’ which moves in a horizontal cylinder which
has a small hole of area 4mm’ at its end. If the force on the piston
is 50N calculate a value for the speed at which the water is forced
out of the small hole, assuming the speed of the piston is
negligible. The density of water is 1000kgm.​

the higher the current the higher the mag field around it the higher the influence on the compass

the answer is a. hope this .

the answer is ampere

the ampere is used to measure electricity. an ampere is a unit of electric current equal. a unit of measure for the flow of current in a circuit. one ampere is the amount of current flow provided when one volt of electrical pressure is applied against one ohm of resistance.