CUET Preparation Today
Which of the following is NOT the property of electric field lines? |
They start from positive charges and end at negative charges. They can never cross each other. They form closed loops. They are continuous curves in a charge-free region. |
They form closed loops. |
The correct answer is Option (3) → They form closed loops. Option 1: They start from positive charges and end at negative charges. Correct. Electric field lines originate from positive charges and terminate at negative charges (or at infinity). Option 2: They can never cross each other. Correct. If two field lines crossed, the electric field would have two directions at the same point, which is impossible. Option 3: They form closed loops. Incorrect. Electric field lines do not form closed loops because the electric field is conservative in electrostatics. Closed loops are formed by magnetic field lines, not electric field lines. Option 4: They are continuous curves in a charge-free region. Correct. In regions where there is no charge, electric field lines remain continuous. |
