I have to some confusion relate to basic fundamentals of current sign.
Here is the simple circuit, with 30v, 1k resistor and current is 30mA.
Whenever i have connected current prob to the battery positive terminal then in waveform current is shown -30mA(minus sign)
Whenever i have to connect current prob at the first terminal of battery then output waveform show the +30mA(plus sign)
My question is battery + terminal and resistor first terminal both are connected with the same wire. so why output waveform is different