Home
Class 11
PHYSICS
STATEMENT 1: The current density vec J a...

STATEMENT 1: The current density `vec J` at any point in ohmic resistor is in direction of electric field `vec E` at that point .
STATEMENT 2: A point charge when released from rest in a region having only electrostatic field always moves along electric lines of force.

A

Statement-1 is true, Statement-2: is true, Statement-2 is a correct explanation for Statement-1.

B

Statement-1 is true, Statement-2: is true, Statement-2 is NOT a correct explanation for Statement-1.

C

Statement-1 is true but statement-2 is false

D

Statement-1 is false, Statement-2 is true

Text Solution

Verified by Experts

The correct Answer is:
C

From relation `vec(J)= sigma vec(E)`, the current density `vec(J)` at any point in the ohmic resistor is in direction of electric field `vec(E)` at that point. In space having non-uniform electric field, charge released from rest may not move along ELOF. hence statement 1 is true while statement-2 is false.
Promotional Banner

Topper's Solved these Questions

  • COMMUNICATION SYSTEM

    RESONANCE|Exercise Exercise|30 Videos
  • DAILY PRACTICE PROBLEMS

    RESONANCE|Exercise dpp 92 illustration|2 Videos

Similar Questions

Explore conceptually related problems

A charged particale is free to move in an electric field. Will it always move along an electric line of force ?

The energy density at a point in vacuum is 1.77xx10^(-7)J//m^(3) . The intensity of the electric field at the point is

Consider the three statements in context of electrostatic field lines. STATEMENT-1 : Electrostatic field lines are continuous curves in space. STATEMENTS-2 : Electrostatic field lines are always perpendicular to equipotential surface. STATEMENT-3 : A charge when released in electrostatic field moves along electrostatic field lines.

A positive point charge is placed in an external electric field. When we release the point charge in a state of rest then electric force acting on it starts moving it. Will the point charge always follow the electric lines of force?

A charged particle always move in the direction of electric field. Is this statement true or false?

STATEMENT-1 : If a charge particle enters into a uniform electric field, then its path must be straight line. and STATEMENT -2 : Electrostatic force on a positive charge particle is always in the direction of electric field.

STATEMENT -1 : Induced charge does not contribute to electric field or potential at a give point . STATEMENT -2 : A point cahrge q_0 is kept outside a solid metallic sphere , the electric field inside the sphere is zero.

RESONANCE-CURRENT ELECTRICITY-Exercise
  1. A current of 2amp is flowing in the primary circuit of a potentiometer...

    Text Solution

    |

  2. For the same potential difference, a potentiometer wire is replaced by...

    Text Solution

    |

  3. If the current in a potentiometer increases, the position of the null ...

    Text Solution

    |

  4. In a potentiometer wire, whose resistance in 0.5 ohm//m, a current of ...

    Text Solution

    |

  5. The potentiometer wire 10m long and 20 ogm resistance is connected to ...

    Text Solution

    |

  6. The length of a potentiometer wire is 10m and a potential difference o...

    Text Solution

    |

  7. The potential gradient of potentiometer is 0.2 "volt"//m. A current of...

    Text Solution

    |

  8. The emf of a standard cell is 1.5 volt and its balancing length is 7.5...

    Text Solution

    |

  9. The resistance of a galvanometer coil is R. What is the shunt resistan...

    Text Solution

    |

  10. For measurement of potential difference, potentiometer is perferred in...

    Text Solution

    |

  11. Resistivity of potentiometer wire is 10^(-7) ohm metre and its area of...

    Text Solution

    |

  12. In electrolysis the mass deposited on an electrode is directly proport...

    Text Solution

    |

  13. An ammeter and a voltmeter are joined in sereis to a cell. Their readi...

    Text Solution

    |

  14. The resistance of an ammeter is 13 Omega and its scale is graduated fo...

    Text Solution

    |

  15. Three resistance P, Q, R each of 2 Omega and an unknown resistance S f...

    Text Solution

    |

  16. In the circuit of figure A1 and A2 are ideal ammeters. Then the readin...

    Text Solution

    |

  17. There is a voltmeter in a circuit. In order to triple its range, the r...

    Text Solution

    |

  18. Sensitivity of potentiometer can be increased by

    Text Solution

    |

  19. STATEMENT 1: The current density vec J at any point in ohmic resistor ...

    Text Solution

    |

  20. Statement-1 : In a Meter Bridge experiment, null point for an unknown ...

    Text Solution

    |