Mixed Questions From Capacitance To MagnetoStatic

Question 1

The total capacitance of capacitors in parallel is calculated by:

Answer 1

Sum of individual capacitances

Question 2

When capacitors are connected in series, the total capacitance is:

Answer 2

Reciprocal of the sum of reciprocals

Question 3

The energy stored in a capacitor is given by:

Answer 3

(1/2)CV²

Question 4

Which of the following materials is typically used as a dielectric?

Answer 4

Mica

Question 5

In a parallel-plate capacitor, increasing the distance between plates will:

Answer 5

Decrease capacitance

Question 6

Magnetic field lines always form:

Answer 6

Closed loops

Question 7

Magnetic field inside a long straight current-carrying wire can be found using:

Answer 7

Ampere’s Law

Question 8

Unit of capacitance is:

Answer 8

Farad

Question 9

A Farad is equivalent to:

Answer 9

Coulomb/Volt

Question 10

Unit of magnetic flux is:

Answer 10

Weber

Question 11

Unit of magnetic flux density is:

Answer 11

Weber per meter squared

Question 12

A Tesla is equivalent to:

Answer 12

Weber/m²

Question 13

Capacitance of a parallel-plate capacitor is directly proportional to:

Answer 13

Area of the plates

Question 14

A dielectric increases the capacitance by:

Answer 14

Increasing permittivity

Question 15

What does magnetic vector potential \vec{A} represent?

Answer 15

A potential function related to \vec{B}

Question 16

Which law uses the line integral of magnetic field around a closed loop?

Answer 16

Ampere’s Law

Question 17

Magnetic field intensity \vec{H} is measured in:

Answer 17

A/m

Question 18

The relationship between \vec{B} and \vec{H} is given by:

Answer 18

\vec{B} = \mu \vec{H}

Question 19

Magnetic permeability \mu represents:

Answer 19

Ability to support magnetic field

Question 20

A magnetic dipole moment is given by:

Answer 20

IA

Question 21

Similarity between electrostatics and magnetostatics:

Answer 21

Both follow inverse square laws

Question 22

Difference between electrostatics and magnetostatics:

Answer 22

Electric field lines are open; magnetic are closed

Question 23

What kind of field is created by steady current?

Answer 23

Magnetic field

Question 24

What causes magnetic fields in magnetostatics?

Answer 24

Steady currents

Question 25

The formula for the capacitance of a parallel-plate capacitor is:

Answer 25

C = \epsilon A/d

Question 26

The electric flux density \vec{D} is related to electric field \vec{E} by:

Answer 26

\vec{D} = \epsilon \vec{E}

Question 27

In SI units, magnetic field \vec{B} is measured in:

Answer 27

Teslas

Question 28

The capacitance of a coaxial cable depends on:

Answer 28

Length and radius ratio

Question 29

The magnetic field produced by a current loop is strongest:

Answer 29

At the center of the loop

Question 30

Biot-Savart Law calculates magnetic field from:

Answer 30

Moving charges

Question 31

The vector form of Biot–Savart Law includes:

Answer 31

\mu_0/4\pi \cdot Idl \times \hat{r}/r^2

Question 32

A magnetic field in a long solenoid is:

Answer 32

Constant and uniform

Question 33

The magnetic dipole moment is a vector quantity pointing:

Answer 33

Normal to the area of the current loop

Question 34

The direction of the magnetic field due to a current is given by:

Answer 34

Right-hand rule

Question 35

When a dielectric is removed from a charged capacitor, the voltage:

Answer 35

Increases

Question 36

The force between two magnetic poles is:

Answer 36

Similar to Coulomb’s law

Question 37

Capacitance depends on the permittivity \epsilon, which is:

Answer 37

Ability to support electric field

Question 38

The unit A·m² (ampere-square meter) represents:

Answer 38

Magnetic dipole moment

Question 39

As current increases in a wire, the magnetic field:

Answer 39

Increases

Question 40

Magnetostatics deals with magnetic fields that:

Answer 40

Are constant in time

Question 41

Magnetic permeability of free space \mu_0 is:

Answer 41

4\pi \times 10^{-7} \, H/m

Question 42

Energy stored in a magnetic field is proportional to:

Answer 42

H^2

Question 43

Capacitance does not depend on:

Answer 43

Voltage applied

Question 44

The loop integral of \vec{B} \cdot d\vec{l} equals:

Answer 44

Enclosed current times \mu_0

Question 45

Magnetic field strength is zero:

Answer 45

Outside a solenoid

Question 46

The permeability of a medium determines:

Answer 46

Magnetic field support