A parallel plate capacitor with air between the plates is charged to a potential difference of 500V and then insulated. A plastic plate is inserted between the plates filling the whole gap. The potential difference between the plates now becomes 75V. The dielectric constant of plastic is –

1.  10/3                           

2.  5 

3.  20/3                           

4.  10

Subtopic:  Dielectrics in Capacitors |
 88%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The circuit was in the shown state for a long time. Now if the switch S is closed then the charge that flows through the switch S, will be –

      

1.  4003 μC                               

2.  100 μC

3.  1003 μC                               

4.  50 μC

Subtopic:  Combination of Capacitors |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A capacitor of 1 µF withstands a maximum voltage of 6 kilovolts while another capacitor of 2 µF withstands a maximum voltage of 4 kilovolts. If the two capacitors are connected in series, the system will withstand a maximum voltage of:

1. 2 kV 2. 4 kV
3. 6 kV 4. 9 kV
Subtopic:  Combination of Capacitors |
 53%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The potential at a certain point in an electric field is 200 V. The work done in carrying an electron upto that point will be.

1.  3.2×10-17 J                      

2.  -3.2×10-17 J

3.  200 J                                     

4.  -200 J

Subtopic:  Electric Potential |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Two charged conducting spheres of radii r1 and r2 are at the same potential. The ratio of their surface charge densities will be -

1.  r1/r2                               

2.  r2/r1

3.  r12/r22                           

4.  r22/r12

Subtopic:  Electric Potential |
 70%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

At the mid point of a line joining an electron and a proton, the values of E and V will be.

1. E=0, V0                   

2. E0, V=0

3. E0, V0                   

4. E=0, V=0

Subtopic:  Electric Potential |
 73%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A charge of 10µC is kept at the origin of XY coordinate system. The potential difference in volts between two points (a, 0) and a/2 , a/2 will be.

1.  Zero                             

2.  9×104

3.  9×104a                           

4.  9×1042

Subtopic:  Electric Potential |
 66%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Find equivalent capacitance between X and Y if each capacitor is 4 μF.

    

1.  4 μF                                     

2.  2 μF

3.  12 μF                                   

4.  1 μF

Subtopic:  Combination of Capacitors |
 69%
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints

Two point charge of 8 μC and 12 μC are kept in air at a distance of 10 cm from each other. The work required to change the distance between them to 6 cm will be.

1.  5.8 J                       

2.  4.8 J

3.  3.8 J                       

4.  2.8 J

Subtopic:  Electric Potential Energy |
 68%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Two parallel plate capacitors of capacitances C and 2C are connected in parallel and charged to a potential difference V. The battery is then disconnected and the region between the plates of the capacitor C is completely filled with a material of dielectric constant K. The potential difference across the capacitors now becomes –

1.  3VK+2                             

2.  KV

3.  VK                                 

4.  3KV

Subtopic:  Dielectrics in Capacitors | Combination of Capacitors |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh