hello, i am new to electronics. i am using a basic electronics book to do simple projects that show how to measure different values of components. i am having a problem getting accurate readings . when i try to get a voltage drop from a resistor inserted in a circuit i dont see any diiference from the full dc source voltage. it doesnt matter what size resistor i put in the circuit i dont get any voltage drops. i do get accurate current drops . i have tried measuring in paralell and series. also i have used two different meters. any suggestions or help would be apprieciated. thanks.........dave w.