EM induction

Question 1

stationary charges produce what field

Answer 1

Electric field

Question 2

moving charges produce what field

Answer 2

Magnetic field

Question 3

Induction

Answer 3

Creating a current through changing magnetic fields

Question 4

Galvanometer

Answer 4

An instrument for measuring and detecting small electric currents

Question 5

A coil between poles …

Answer 5

experiences a torque when the current is changed

Question 6

what can a coil between two poles be used for

Answer 6

measure voltage

Question 7

EMF

Answer 7

the greatest possible P.D generated from a particular source of electric current

Question 8

EMF equation

Answer 8

e = integral (along the line s) E.ds

The tangential force per unit charge over a circuit. Non-zero so non-conservative

Question 9

Lenz’s law ensures….

Answer 9

conservation of energy

Question 10

work done on moving charge

Answer 10

the direction of the induced emf opposes the amgnetic field that produces it so that work is done on the moving charges.

Question 11

stokes therom

Answer 11

states that the line integral of any vector field C around a closed path is equal to the surface integral of the curl of C through any surface S bounded by the curve

Question 12

mathmatical theorem that connects the integral form of amperes law to the differential form

Answer 12

stokes