
The following questions relate to the graph in Figure

Determine the frequency of this alternating current.


Important Questions on Alternating Currents
The following questions relate to the graph in Figure.
Determine the values of .

The following questions relate to the graph in Figure.
(b) Write an equation to represent this alternating current.

An alternating current, measured in amperes (A), is represented by the equation: .
(a) Determine the values of .

An alternating current, measured in amperes (A), is represented by the equation: . Sketch a graph to represent the current.

An alternating voltage , in volt , is represented by the equation:
(a) Determine the values of for this alternating voltage.

An alternating voltage , in volt , is represented by the equation:
(b) Calculate when . (Remember that is in radians when you calculate this.)

An alternating voltage , in volt , is represented by the equation . Sketch a graph to show two complete cycles of this voltage.

The Y-sensitivity and time-base settings are and . The trace seen on the screen is the one shown in Figure .
Determine the amplitude, period and frequency of the signal applied to the -input of the .
