### Discussion :: Ohm's Law - General Questions (Q.No.2)

Eleczee said: (Oct 31, 2010) | |

We know ohms law,V=IR here V is changed to 2V and so current changes from I to 2I therefore,2V=2IR which implies,V=IR Hence remains the same. |

Laksh said: (Nov 3, 2010) | |

I is proportional to V |

Sarvesh Goswami said: (Aug 21, 2011) | |

In this question the voltage & current across the resister is double i.e. 2v=2I*resister (R) 2V/2I =R v/i= R According to the Ohm's law the value or resister is remain same |

M.Daniyal Munir said: (Sep 22, 2011) | |

We know ohms law,V=IR Here V is changed to 2V and so current changes from I to 2I Therefore,2V=2IR which implies,V=IR Hence remains the same. |

Naren Raja said: (Oct 5, 2011) | |

Resistor value is fixed and it will not change. |

Bajrang said: (Oct 10, 2011) | |

On changing I proportional voltage, the current also change by same extent and we know that R is directly proportional to V and inversly proportional to I hence answer is B. |

Vimala said: (Dec 14, 2011) | |

Thanks eleczee. |

Tayyaba said: (Jun 3, 2012) | |

Voltage and current are proportional to each other and are is a constant:. V=IR. (2V) = (2I)R. V=IR. |

Gil said: (Jul 1, 2012) | |

Pay attention to the words that is being used in the problem. ACROSS means = parallel to the resistor. And THROUGH means = series to the resistor. Since, Voltage at parallel is the same. Current in series is the same. We can say that Vb=2volts & Ib=2amperes in the Second Equation. Therefore. Using the ohms law : I = V/R. Equation 1 : Ra = 1Va/1Ia is 1ohm. Equation 2 : Rb = 2Vb/2Ib is 1ohm. Conclusion. Rb=Ra=1ohm therefore The value of the resistor remains the same and did not change. |

Dileepkumar said: (Aug 25, 2012) | |

Once fix the resistor if then the applied current&voltage is varied randomly ,the resistance not changed. how ever , we know that ohm's law V=IR; GIVEN THAT V=2V; I=2I; WE SUBSTITUTE THE OHMS LAW IN ABOVE GIVEN EQATIONS R=2V/2I R=V/I, SO THE RESISTANCE VALUE IS NOT CHANGED BY VARIENG THE CURRENT AND VOLTAGE. |

Sundara Pandian said: (May 18, 2013) | |

According to Ohms law, V=IR and R=V/I. If V doubles and it become 2V and I doubles and it become 2I. Therefore R = 2V/2I = V/I (R values not change). |

Nandhini.S said: (Apr 8, 2015) | |

V=IR. Does are value remain constant always? |

C J said: (May 23, 2016) | |

The resistance R is dependent neither on the voltage V nor on the current I. So R will remain constant. |

C.Gurunathan said: (Aug 4, 2017) | |

It is useful to improve knowldege. |

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