# Electrical Engineering - Ohm's Law - Discussion

### Discussion :: Ohm's Law - General Questions (Q.No.8)

8.

What is the approximate resistance setting of a rheostat in which 650 mA of current flows with a 150 V source?

 [A]. 9.7 [B]. 97 [C]. 23 [D]. 230

Answer: Option D

Explanation:

No answer description available for this question.

 Parminder Singh said: (Feb 28, 2011) I=V/R I=650ma V=150 R=? 650ma=150/R 650a/1000=150/R 65a/100=150/R R*65a/100=150 R=150*100/65 R=15000/65 R=230

 Anand said: (Jul 22, 2011) Nice answer parminder

 Murugaperumal said: (Jul 25, 2011) V=IR SO,R=150/650*10^-3, R=150/.65, R=230 OHMS.

 Prashant said: (Jul 28, 2011) I=650mA, I=650*10^3A, V=150V, R=V/I; R=150/(650*10^3); R=230 ohm

 Shyam Patiala said: (Mar 13, 2012) V=150V I=650mA I=650/1000A R=? V=IR R=V/I R=150*1000/650 R=150000/650 R=15000/65 R=230ohm

 Ramkumar said: (Mar 27, 2012) v=150v i=650ma=650*10^-3 v=ir r=v/i =150/650810^-3 =230ohm

 Suresh Kumar Rangaraj said: (Sep 1, 2014) v = 150v. i = 650*10^-3. r = v/i. r = 150/(650*10^-3) . r = 230.

 Manoj said: (Feb 7, 2015) v = 150v. i = 150/650/1000 = 0.65. 150*0.65 = 230 v.

 Khenz Santos said: (Jul 3, 2015) V = IR. R = V/I. I = 650 mA. V = 150 V. So, R = 150/(650*10^-3). R = 230 ohms.

 Nihal P Navas said: (Sep 6, 2015) V = IR. R = V/I. Given I = 650 mA = (650 x 10^3) = 0.65 A. V = 150 V. Therefore R = 150/0.65 = 230.77~~ 230 ohms.

 Pork said: (Feb 10, 2016) Where did you get that 1000?

 Pork said: (Feb 10, 2016) Where did you get that 1000?

 Veenashri said: (Apr 2, 2016) V = 150. I = 650. => V/I = 150/650 = 0.230777. => R = 0.23077/1000. => 230 OHM.

 Sunil said: (Sep 23, 2016) V =150, I = 650 mA, R = ?, I = 650 mA = 650/1000 = 0.65, R = V/I = 150/0.65 = 230 Ω.

 Sarabjit Singh said: (May 13, 2017) Very nice explanations. Thank you all.

 Prasanth said: (Oct 22, 2018) 150v. 650ma. R=?. R = v/I. =150/(0.65), I= 650/1000 = 0.65, 150/0.65 = 230.

 Anil said: (Jan 9, 2019) How come 1000 here?

 Subhash said: (Jan 17, 2019) 650*(10^-3) = 650 * (1/10^3). So =650/1000.

 Matthew Sandoval said: (Dec 11, 2019) where did the 100 come from? I understand the 1000 not the 100 though.

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