V rms and I rms shorten

Welcome to Maths and Science Academy. In

this video, we will be looking at part

four of electronamics.

In the alternating current AC generator,

the coil is connected to slip rings. The

current in the slip rings changes

direction when the current in the coil

reverses. Thus, alternating current AC.

The brushes collect the alternating

current AC from slip rings. The circuit

symbol for alternating current is this

one. Root mean skewer current is zero.

Root mean skewer potential difference is

also zero.

coil is rotated in a clockwise

direction.

The coil cut through the magnetic field

which is directed from north to south

pole of the magnet. V and I increase to

voltage V max and current. Immax when

the coil is horizontal and it cuts the

magnetic field perpendicularly.

Root mean skewer current is at maximum

mean skewer potential difference is at

maximum.

Maximum potential difference. Maximum

current and maximum power are related to

each other by the following equation.

Average power dissipated in any

component can be calculated in terms of

the arms values. The relationship V RMS=

2 IRMS * R is a useful equation when

working with electric circuits. The

alternating current is C cycle. Consider

simplified diagram below represents an

electric motor. Give a reason why the

section of the coil labeled BC in the

above diagram does not experience a

magnetic force whilst the coil is in the

position as shown. We can see from the

diagram there is an open switch. This

implies no current. Consider the graphs

of the current and potential difference

outputs of an AC generator. Calculate

the average power output of this

generator.

Thanks for watching.