a dual-range d.c. voltmeter has a common negative terminal and two positive terminals, one of which gives full deflection of 10V, and the other of full deflection 3V. Given that the voltmeter resistance btw negative terminal & the other of full deflection of +3V is 1000 ohm. what is the resistance btw negative terminal and terminal of +10V? i use V is proportional to R method. 3V ---> 1000 ohm 10V ---> 3333 ohm is that the working. the answer is correct, but i doubt if the working is just like that. thank you.