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Current Electricity

JEE Main 2025 (Online) 23rd January Morning ShiftMCQEasy📈 Topic in 11% papers+4−1
Ques. 1JEE Main 2025, 23 January (Morning Shift)

Identify the valid statements relevant to the given circuit at the instant when the key is closed. [figure] Choose the correct answer from the options given below:

  1. A, C Only
  2. C, D Only
  3. A, B, D Only
  4. B, C, D Only

Answer

(4) B, C, D Only

Solution

At the instant of closing, the uncharged capacitor has q=0, so VAB= qC=0: it acts like a wire.

[figure]

All 5 V falls across R: I= 5R is maximum in R and in the wires B true, A false

q=0 is minimum (D true) and VAB=0 is minimum (C true)

B, C and D

Answer: (4)

Keep practising — Current Electricity

Ques. 2JEE Main 2025, 23 January (Evening Shift)

At steady state the charge on the capacitor, as shown in the circuit below, is . [figure]

Ques. 3JEE Main 2025, 22 January (Morning Shift)

Given below are two statements : In the light of the above statements, choose the correct answer from the options given below.

  1. Statement-I is false but Statement-II is true
  2. Statement-I is true but Statement-II is false
  3. Both Statement-I and Statement-II are false
  4. Both Statement-I and Statement-II are true
Ques. 4JEE Main 2025, 22 January (Morning Shift)

Which of the following resistivity ( ) v/s temperature ( T ) curves is most suitable to be used in wire bound standard resistors?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 5JEE Main 2025, 22 January (Morning Shift)

Sliding contact of a potentiometer is in the middle of the potentiometer wire having resistance Rp=1 as shown in the figure. An external resistance of Re=2 is connected via the sliding contact. The electric current in the circuit is : [figure]

  1. 1.35 A
  2. 0.9 A
  3. 1.0 A
  4. 0.3 A
Ques. 6JEE Main 2025, 22 January (Evening Shift)

The net current flowing in the given circuit is A. [figure]

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