Because of bad picture quality: Va->b = 3V Vb->c = -2V Vbattery = 6V What are th
ID: 1589381 • Letter: B
Question
Because of bad picture quality:
Va->b = 3V
Vb->c = -2V
Vbattery = 6V
What are the values of the following volatages?
Vb->d = ?
Vc->d = ?
In the circuit below, a voltmeter (ideal) is used to measure the potential difference across various resistors that are not the same. The following values are found: (Recall that V_x rightarrow Y means V_x-V_Y Another way to think of it is that the red (+) lead is connected to node X and the black (-) is connected to node Y.) What are the values of the following voltages?Explanation / Answer
i'm using small notation for given points
Vbattery = Vad = 6v , Vab = 3v , Vbc= -2v
since Vad = Vab + Vbd
=> (1) Vbd =Vad - Vab = 6 - 3 = 3 v
(2) let's suppose point d is at ground potential
Vd = 0 v => Vb = +3v because Vbd = 3v
since Vbc = -2v = Vb -Vc
=> Vc = Vb +2 = +5v
=> Vcd = Vc - Vd = 5 - 0 = +5 v
(3) Vad = Vac +Vcd
=> Vac = Vad - Vcd = 6 - 5 =+1v