iCON Education - Current Electricity AIIMS Test

Question 1: Palette 1/12

AIIMS 2019 MCQ

For a wire $\frac{R}{\ell}=\frac{1}{2}$ and length of wire is $\ell=5 \mathrm{~cm}$. If potential difference of $\mathrm{l} \mathrm{V}$ is applied across it, then current through wire will be ($R=$ Resistance)

40 A

4 A

25 A

2.5 A

Question 2: Palette 2/12

AIIMS 2019 MCQ

A current of $10 \mathrm{~A}$ is passing through a metallic wire of cross-sectional area $4 \times 10^{-6} \mathrm{~m}^2$. If the density of the aluminium conductor is $2.7 \mathrm{~gm} / \mathrm{cc}$ considering aluminium gives 1 electron per atom for conduction, then find the drift velocity of the electrons if molecular weight of aluminium is $27 \mathrm{~gm}$.

$1.6 \times 10^{-4} \mathrm{~m} / \mathrm{s}$

$3.6 \times 10^{-4} \mathrm{~m} / \mathrm{s}$

$2.6 \times 10^{-4} \mathrm{~m} / \mathrm{s}$

$1.5 \times 10^{-4} \mathrm{~m} / \mathrm{s}$

Question 3: Palette 3/12

AIIMS 2018 MCQ

A metal wire has a resistance of $35 \Omega$. If its length is increased to double by drawing it, then its new resistance will be

$70 \Omega$

$140 \Omega$

$105 \Omega$

$35 \Omega$

Question 4: Palette 4/12

AIIMS 2018 MCQ

In the circuit in the figure, if no current flows through the galvanometer when the key K is closed, the bridge is balanced. The balancing condition for bridge is

AIIMS 2018 Physics - Current Electricity Question 10 English

$\frac{C_1}{C_2}=\frac{R_1}{R_2}$

$\frac{C_1}{C_2}=\frac{R_2}{R_1}$

$\frac{C_1^2}{C_2^2}=\frac{R_1^2}{R_2^2}$

$\frac{C_1^2}{C_2^2}=\frac{R_2}{R_1}$

Question 5: Palette 5/12

AIIMS 2018 MCQ

In the circuit, shown the galvanometer $G$ of resistance $60 \Omega$ is shunted by a resistance $r=0.02 \Omega$. The current through $R$ is nearly $1 \mathrm{~A}$. The value of resistance $R$ (in ohm) is nearly

AIIMS 2018 Physics - Current Electricity Question 7 English

1.00 $\Omega$

5.00 $\Omega$

11.0 $\Omega$

6.0 $\Omega$

Question 6: Palette 6/12

AIIMS 2018 MCQ

In the adjoining circuit diagram, the readings of ammeter and voltmeter are 2 A and 120 V, respectively. If the value of R is 75$\Omega$, then the voltmeter resistance will be

AIIMS 2018 Physics - Current Electricity Question 1 English

100 $\Omega$

150 $\Omega$

300 $\Omega$

75 $\Omega$

Question 7: Palette 7/12

AIIMS 2018 MCQ

Assertion Terminal voltage of a cell is greater than emf of cell during charging of the cell.

Reason The emf of a cell is always greater than its terminal voltage.

Both Assertion and Reason are correct, Reason is the correct explanation of Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Assertion is correct and Reason is incorrect

Assertion is incorrect and Reason is correct

Question 8: Palette 8/12

AIIMS 2018 MCQ

Assertion Bulb generally get fused when they are switched on or off.

Reason When we switch on or off, a circuit current changes in it rapidly.

Both Assertion and Reason are correct, Reason is the correct explanation of Assertion

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

Assertion is correct and Reason is incorrect

Assertion is incorrect and Reason is correct

Question 9: Palette 9/12

AIIMS 2017 MCQ

A cylindrical conductor AB of non-uniform area of cross-section carries a current of 5A. The radius of the conductor at one end A is 0.5 cm. The current density at the other end of the conductor is half of the value at A. The radius of the conductor at the end B is nearly

1.4 cm

0.7 cm

0.6 cm

None of these

Question 10: Palette 10/12

AIIMS 2017 MCQ

The effective resistance between p and q in given figure is

AIIMS 2017 Physics - Current Electricity Question 4 English

2$\Omega$

3$\Omega$

5$\Omega$

6$\Omega$

Question 11: Palette 11/12

AIIMS 2017 MCQ

Two batteries, one of emf $18 \mathrm{~V}$ and internal resistance $2 \Omega$ and the other of emf $12 \mathrm{~V}$ and internal resistance $1 \Omega$ are connected as shown. The voltmeter $V$ will record a reading of

AIIMS 2017 Physics - Current Electricity Question 3 English

14 V

15 V

18 V

30 V

Question 12: Palette 12/12

AIIMS 2017 MCQ

Assertion : A potentiometer is preferred over that of a voltmeter for measurement of emf of a cell.

Reason : Potentiometer does not draw any current from the cell.

Both assertion and reason are true and reason is the correct explanation of assertion

Both assertion and reason are true but reason is not the correct explanation of assertion

Assertion is true but reason is false

Both assertion and reason are false.