JEE Advanced Physics: Current Electricity Practice Questions

13 questions with answers and step-by-step solutions. Tap any question to see the full worked solution.

  1. Q1.
    A copper wire of resistance 10 ohms is stretched to double its original length. What is the new resistance of the wire?
    Easy
  2. Q2.
    Two resistors of 2 ohms and 4 ohms are connected in parallel. What is the equivalent resistance of the combination?
    Easy
  3. Q3.
    Three resistors of 1 ohm, 2 ohms, and 3 ohms are connected in series. What is the total resistance?
    Easy
  4. Q4.
    A current of 2 amperes flows through a conductor for 10 seconds. How much charge passes through the cross-section of the conductor?
    Easy
  5. Q5.
    What is the power dissipated by a resistor of 5 ohms when a potential difference of 10 volts is applied across it?
    Easy
  6. Q6.
    A battery of emf 12 V and internal resistance 2 ohms is connected to a variable resistor R. The power delivered to the resistor is maximum when R is
    Medium
  7. Q7.
    A galvanometer of resistance 50 ohms gives a full scale deflection for a current of 0.05 A. To convert it into a voltmeter of range 0 to 5 V, the required serie
    Medium
  8. Q8.
    A wire of length Land resistance R is stretched uniformly to a length 2L. The new resistance of the wire is
    Medium
  9. Q9.
    In a potentiometer experiment, the balancing length for a cell of emf 1.5 V is 60 cm. If the cell is replaced by another cell of emf E, the balancing length bec
    Medium
  10. Q10.
    Three resistors of 2 ohms, 3 ohms, and 6 ohms are connected in parallel. The equivalent resistance of the combination is
    Medium
  11. Q11.
    A battery of emf E and internal resistance r is connected to a variable resistor R. The power delivered to the resistor is maximum when R = r. If the resistor i
    Hard
  12. Q12.
    A wire of resistance 12 ohms is bent into a circle. What is the effective resistance between two points diametrically opposite on the circle?
    Hard
  13. Q13.
    In a potentiometer circuit, a cell of emf E is balanced by a length l of the potentiometer wire. If the internal resistance of the cell is r and it is shunted b
    Hard

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Current Electricity — JEE Advanced Physics Practice Questions with Solutions | SolveGini