Electrical Engineering - Ohm's Law - Discussion
Discussion Forum : 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?
9.7 
97
23
230
Discussion:
23 comments Page 3 of 3.
MURUGAPERUMAL said:
1 decade ago
V=IR
SO,R=150/650*10^-3,
R=150/.65,
R=230 OHMS.
SO,R=150/650*10^-3,
R=150/.65,
R=230 OHMS.
Anand said:
1 decade ago
Nice answer parminder
PARMINDER SINGH said:
1 decade ago
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
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
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