.pur-current{width:124px; height:106px ;}
.current-direction{width:179px; height:170px ;}
.electrical-circuit{width:154px; height:341px ;}
.drift-velocity{width:198px; height:130px ;}
.drift-velocity-example2{width:138px; height:114px ;}
.current-formola{width:80px; height:53px ;}
.electric-current-example1{width:173px; height:53px ;}
.electric-current-example2{width:191px; height:116px ;}
.electric-current-example3{width:162px; height:117px ;}
.electric-current-example4{width:200px; height:51px ;}
.circuit-symbols{width:99px; height:47px ;}