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AC concepts (to review)

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

Find the average value of current when the current that are equidistant are 4A, 5A and 6A.

a)

5A

b)

6A

c)

10A

d)

15A

2.

In a sinusoidal wave, average current is always _______ rms current.

a)

Equal to

b)

Not related

c)

Less than

d)

Greater than

3.

The Ohm's law (the equation is given) is valid for ................................. circuit/s

a)

Pure capacitive circuit

b)

Pure inductive  circuit

c)

Pure Resistive AC Circuit

d)

any circuit

4.

1)What is the phase difference between voltage and current in a circuit including only a capacitor and an AC source? 2)Does current lag or lead a voltage?

a)

1)1800

2) electric current leads voltage

b)

electric current lags the voltage by 900

c)

Phase difference =1800

the voltage leads, the current lags

d)

Phase difference =900

Electric current leads, the voltage lags

5.

What is the phase difference between voltage and current in a circuit including only a inductor and an AC source? Does current lag or lead a voltage?

a)

voltage leads the current by 900

b)

current leads the voltage by 900

c)

voltage leads the current by 1800

d)

voltage lags the current by 900

6.

Which circuit corresponds to this graph of electric current and voltage?

a)

b)

c)

d)

7.

Which circuit corresponds to this graph of electric current and voltage?

a)

b)

c)

d)

8.

Which circuit corresponds to this graph of electric current and voltage?

a)

b)

c)

d)

9.

The Ohm's law (the equation is given) is valid for ................................. circuit

a)

b)

c)

d)

10.

What are the equations of voltage, current and resistance in series connection?

a)

b)

c)

d)