Everything else

Question 1

branch

Answer 1

any portion of a circuit that can be simplified as having two terminals

Question 2

very useful for controlling the voltage in another circuit.

Answer 2

Potentiometers

Question 3

Unit of capacitance

Answer 3

the farad

Question 4

The total capacitance of two capacitors connected in series is less than that of either capacitor alone

Answer 4

True

Question 5

If a conductor has a capacitance of one farad, a transfer of one coulomb of charge to the conductor will increase its potential by one volt.

Answer 5

True

Question 6

The capacitance of a given capacitor will be higher if the separation of the plates is reduced without changing the dielectric.

Answer 6

True

Question 7

Insertion of a dielectric between the plates of a capacitor decreases the voltage across it and hence reduces the capacitance.

Answer 7

False

Question 8

If the charge on a capacitor is doubled, the potential energy will be quadrupled.

Answer 8

True

Question 9

For capacitors connected in parallel, the voltage across each capacitor is the same as that across the source.

Answer 9

True

Question 10

The amount of charge that can be placed on a conductor does not depend on

Answer 10

its potential

Question 11

The capacitance of a capacitor increases with a decrease in

Answer 11

plate separation

Question 12

The total voltage is the sum of the voltages across each capacitor.

Answer 12

capacitors in series

Question 13

have the ability to store a charge

Answer 13

Capacitors

Question 14

Capacitance is directly proportional to

Answer 14

charge

Question 15

is a measure of how easy it is to establish electric flux in a material

Answer 15

Permittivity

Question 16

Capacitors in series are treated the same as

Answer 16

resistors in parallel

Question 17

The dielectric constant may also be referred to as the relative

Answer 17

of a material

Question 18

The total capacitance of a number of capacitors connected in series is_________the capacitance of any capacitor taken individually

Answer 18

less than

Question 19

The_____________for a material is the ratio of the capacitance with that material between the plates to the capacitance for a vacuum between the plates.

Answer 19

dielectric constant

Question 20

A group of capacitors connected directly to the same source of potential difference so that the available charge is shared are said to be connected in

Answer 20

parallel

Question 21

Current in a capacitor exists only while capacitor voltage

Answer 21

is changing

Question 22

A capacitor stores charge Q at a potential difference ΔV. If the voltage applied by a battery to the capacitor is doubled to 2ΔV

Answer 22

the capacitance remains the same and the charge doubles

Question 23

Two capacitors are identical. They can be connected in series or in parallel. If you want the smallest equivalent capacitance for the combination, you should connect them in

Answer 23

series

Question 24

Consider two identical capacitors. Each capacitor is charged to a voltage of 10 V. If you want the largest combined potential difference across the combination, you should connect them in

Answer 24

series

Question 25

You have three capacitors and a battery. In which of the following combinations of the three capacitors will the maximum possible energy be stored when the combination is attached to the battery?

Answer 25

parallel

Question 26

refers to the force that acts between magnets and magnetic materials

Answer 26

Magnetism

Question 27

a magnetic field is a

Answer 27

force field

Question 28

The lines of force between the north pole and south pole of a permanent magnet or an electromagnet.

Answer 28

Magnetic flux

Question 29

The SI unit of magnetic flux, which represents 10⁸ lines

Answer 29

Weber (Wb)

Question 30

The measure of ease with which a magnetic field can be established in a material

Answer 30

Permeability

Question 31

The opposition to the establishment of a magnetic field in a material

Answer 31

Reluctance

Question 32

Faraday’s law

Answer 32

A law stating that the voltage induced across a coil of wire equals the number of turns in the coil times the rate of change of the magnetic flux

Question 33

A unit of flux density that is the same as a Wb/m² is the

Answer 33

tesla

Question 34

The Weber is a unit of what?

Answer 34

Magnetic Flux

Question 35

The cause of magnetic flux is

Answer 35

magnetomotive force

Question 36

The measurement unit for permeability is

Answer 36

weber/ampere-turn-meter

Question 37

The measurement unit for relative permeability is

Answer 37

dimensionless

Question 38

The property of a magnetic material to behave as if it had a memory is called

Answer 38

hysteresis

Question 39

In a series capacitor circuit, the total capacitance is

Answer 39

Smaller than the smallest individual capacitor value

Question 40

The control voltage for a relay is applied to the

Answer 40

coil

Question 41

When the current through a coil changes, the induced voltage across the coil will

Answer 41

oppose the change in the current that caused it

Question 42

Magnetic Lines of Force, go from North to South. And never

Answer 42

cross over each other

Question 43

Loads are commonly connected in:

Answer 43

In parallel so that they operate independently

Question 44

Michael Faraday & Joseph Lenz

Answer 44

The two people mostly responsible for our ideas concerning inductance and induced voltages

Question 45

Voltage is induced in a circuit whenever the flux linking (i.e., passing through) the circuit is changing and that the magnitude of the voltage is proportional to the rate of change of the flux.

Answer 45

Faraday’s Law

Question 46

The greater the number of flux lines cut per unit time or the stronger the magnetic field strength

Answer 46

the greater will be the induced voltage across the conductor

Question 47

an induced current is always such a direction to oppose the motion or change causing it.

Answer 47

Lenz’s law

Question 48

Reluctance is the same to a magnetic circuit as \_\_\_\_\_\_\_\_\_is to an electric circuit

Answer 48

Resistance

Question 49

**L** is called the self-inductance of the coil, and in the SI system its unit is the

Answer 49

henry

Question 50

capacitors in series are treated the same as

Answer 50

resistors in parallel

Question 51

The law that states that the induced effect is such that it opposes the cause that produced it is:

Answer 51

Lenz’s Law

Question 52

Increasing levels of inductance can be obtained by placing inductors

Answer 52

in series

Question 53

The inductance of a multi-turn coil depends on

Answer 53

geometry of coil

Question 54

The unit of inductance (henry) is equivalent to

Answer 54

Wb/A

Question 55

Using inductance to shift from measuring flux changes to measuring current changes simplifies the use of whose law?

Answer 55

Faraday

Question 56

The permittivity constant is generally denoted by

Answer 56

ε

Question 57

The summation of currents entering a node is equal to the summation of currents leaving the node

Answer 57

Kirchhoff’s Current Law