PYQ Vault

Day 640: JEE Mains Physics

4 questions. Try each one first, then open its answer.

  1. Question 1

    Current Electricity. Asked once: 2021 Paper 5

    17
    An RC circuit as shown in the figure is driven by a AC source generating a square wave. The output wave pattern monitored by CRO would look close to:

    Tap an option to check your answer.

  2. Question 2

    Current Electricity. Asked once: 2021 Paper 5

    12
    A conducting wire of length ' ll ', area of cross-section AA and electric resistivity ρ\rho is connected between the terminals of a battery. A potential difference VV is developed between its ends, causing an electric current. If the length of the wire of the same material is doubled and the area of cross-section is halved, the resultant current would be:

    Tap an option to check your answer.

  3. Question 3

    Current Electricity. Asked once: 2021 Paper 3

    6
    The current (i) at time t=0t= 0 and t=∞t= \infty respectively for the given circuit is :

    Tap an option to check your answer.

  4. Question 4

    Current Electricity. Asked once: 2021 Paper 1

    5
    A cell E1E_{1} of emf 6 V6\text{ }V and internal resistance 2Ω2\Omega is connected with another cell E2E_{2} of emf 4 V4\text{ }V and internal resistance 8Ω8\Omega (as shown in the figure). The potential difference across points XX and YY is -

    Tap an option to check your answer.