Electrodynamics

Question 1

magnetic flux linkage

Answer 1

of the number of turns on the coil and the flux through the coil (NФ)

Question 2

Faraday’s law of electromagnetic induction

Answer 2

the emf induced
is directly proportional to the rate of change of magnetic flux (flux
linkage)

Question 3

Lenz’s law

Answer 3

the induced current flows in a direction so as to
set up a magnetic field to oppose the change in magnetic flux

Question 4

diode

Answer 4

a component that only allows current to flow in
one direction

Question 5

RMS Voltage

Answer 5

The alternating current,the effective voltage for A.C

Question 6

Notes about a generator

Answer 6

1. Mechanical energy to electrical energy
2. Uses the right-hand law
3. Slip rings
4. Faradays law

Question 7

Noes about a motor

Answer 7

1. Electrical energy to mechanical energy
2. Uses the left hand
3. Split rings
4. Lenz laws

Question 8

Hand rule

Answer 8

current is middle finger
force is thumb
magnetic field is 1st finger