KVPY Sample Paper KVPY Stream-SX Model Paper-21

  • question_answer
    In the circuit of figure the bulb will become suddenly bright if:

    A) Contact is made or broken

    B) Contact is made

    C) Contact is broken

    D) Would not become bright at all

    Correct Answer: C

    Solution :

    When contact is broken net emf is e + E i.e. emf get increased. Here e is the induced emf in L due to abrupt charge in current or breaking of contact, as we can see emf is increased so brightness of bulb increases.

You need to login to perform this action.
You will be redirected in 3 sec spinner