Home
Class 12
PHYSICS
The resistance R=V/I Where V = (100 p5)...

The resistance `R=V/I` Where `V = (100 p5) V and I=(10 pm0.2)` . The percentage error in R is

A

`5.2%`

B

`4.8%`

C

`7%`

D

`3%`

Text Solution

Verified by Experts

The correct Answer is:
C
Here,
`V=(100 pm5) V and I = (10 pm 0.2)A`
As `R=V/I :. (DeltaR)/R=(DeltaV)/V+(DeltaI)/I`
The percentage error in R is
`(DeltaR)/Rxx100 = ((DeltaV)/V+(DeltaI)/I)xx100`
`=((5V)/(100V)+(0.2A)/(10A))xx100`
`=(0.05+0.02)xx100=7%`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2017

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

  • KARNATAKA CET 2019

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

The resistance R=V/I where V= (100 pm5)V and I= (10 pm 0.2)A . Find the percentage error in R.

In the determination of resistance R is calculated from R =V//I where V is the reading of the voltmeter and I is the reading of the ammeter. The values obtained are V = 10 pm 0.2 V and I = 0.5 pm 0.01 A. The maximum percentage error in the measurement of resistance is

The heat generated in a circuit is given by Q=I^(2)Rt, where I is current, R is resistance and t is time. If the percentage errors in measuring I,R and t are 2%,1% and 1% respectively, then the maximum error in measuring heat will be :

The density 'rho' of a piece of metal of mass 'm' and volume 'V' is given by the formula rho = m//V . If m = 375.32 pm 0.01 g , V = 136.41 pm 0.01 cm ^ 3 . Find the percentage error in the measurement of density 'rho' .

If two resistances of value R _ 1 = ( 2.0 pm 0 .1 ) Omega and R _ 2 = ( 12.3 pm 0.2 ) are connected in (i) parallel and (ii) series then find the error in the estimation of equivalent resistance.

The resistance of a metal is given by R=(V)/(I), where V is potential difference and I is the current. In a circuit the potential difference across resistance is V=(8+-0*5) V and current in resistance, I=(4+-0*2)A . And current in resistance with its percentage error :

A voltmeter has a range 0-V with a series resistance R. With a series resistance 2 R, the range is 0-V'. The correct relation between V and V' is

In a series resonant circuit the ac voltages across resistance R , inductance L and capacitance C are 5V, 10V and 10V respectively. The ac voltage applied to the circuit will be

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2018-PHYSICS
  1. A mass m on the surface of the Earth is shifted to a target equal to ...

    Text Solution

    |

  2. First overtone frequency of a closed pipe of length l1 is equal to th...

    Text Solution

    |

  3. The resistance R=V/I Where V = (100 p5) V and I=(10 pm0.2) . The perc...

    Text Solution

    |

  4. A block rests on a rough inclined plane making an angle of 30 ^@ with...

    Text Solution

    |

  5. Two particle of masses m1 and m2 have equal kinetic energies . The ra...

    Text Solution

    |

  6. The pressure at the bottom of a liquid tank is not proportional to the

    Text Solution

    |

  7. A Carnot engine takes 300 calories of heat from a source at 500 K and...

    Text Solution

    |

  8. The pressure of an ideal gas is Increased by keeping temperature const...

    Text Solution

    |

  9. A man weighing 60 kg is a lift moving down with an acceleration of 1.8...

    Text Solution

    |

  10. Moment of inertia of a body about two perpendicular axes X and Y in th...

    Text Solution

    |

  11. Two wires A and B are stretched by the same load . If the areas of cro...

    Text Solution

    |

  12. The magnitude of point charge due to which the electric field 30 c awa...

    Text Solution

    |

  13. A mass of 1 kg carrying a change of 2 C is accelerated through a poten...

    Text Solution

    |

  14. The force of repulsion between two identical positive charge when kept...

    Text Solution

    |

  15. For the arrangement of capacitors as shown in the circuit , the effect...

    Text Solution

    |

  16. The work done to move a charge on an equipotenital surface is

    Text Solution

    |

  17. Two capacitors of 3muF and 6 muF are connected in series and a potenti...

    Text Solution

    |

  18. Ohm's law is applicable to

    Text Solution

    |

  19. If the last band on the carbon resistor is absent, then the tolerance ...

    Text Solution

    |

  20. The effective resistance between P and Q for the following network is

    Text Solution

    |