Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 32

MEDIUM

NEET

IMPORTANT

Earn 100

While working on a physics project at school physics lab, you require a $4 μ F$ capacitor in a circuit across a potential difference of $1 kV .$ Unfortunately, $4 μ F$ capacitors are out of stock in your lab but $2 μ F$ capacitors which can withstand a potential difference of $400 V$ are available in plenty. If you decide to use the $2 μ F$ capacitors in place of $4 μ F$ capacitor, minimum number of capacitors required are

50% studentsanswered this correctly

Important Questions on Electrostatic Potential and Capacitance

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 33

A parallel plate capacitor with air between the plates has a capacitance

C .

If the distance between the plates is doubled and the space between the plates is filled with a dielectric of dielectric constant

6,

then the capacitance will become

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 34

The net capacitance of a system of capacitance as shown in the figure between points $A$ and $B$ is

Question Image

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 35

As in the figure, if a capacitor of capacitance $' C'$ is charged by connecting it with resistance $R,$ then energy given by the battery will be

Question Image energy

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 36

There are two identical capacitors, the first one is uncharged and filled with a dielectric constant

K

while the other one is charged to potential

V

having air between its plates. If two capacitors are joined end to end, the common potential will be

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 37

If initial charge on all the capacitors were zero, work done by the battery in the circuit shown is

Question Image

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 38

A capacitor of capacitance

C

is charged with the help of a

200 V

battery. It is then discharged through a small coil of resistance wire embedded in a thermally insulated block of specific heat capacity

2.5 \times 10^{2} \frac{J}{kg}

and mass

0.1 kg .

If the temperature of the block rises by

0.4 K

, the value of

C

is

MEDIUM

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 39

Which of the following is not true?

EASY

NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 17 - Electrostatic Potential and Capacitance>Assignment>Q 40

How many

1 μF

capacitors must be connected in parallel to store a charge of

1 C

with a potential of

110 V

across the capacitors ?