Free Printable AC and DC

Free Printable Worksheets

Worksheets

AC and DC

Total questions: 20

Worksheet time: 12mins

Name

Class

Date

1.

An oscilloscope shows the current flow above what type of current is it showing?

a)

DC

b)

AC

c)

Rectified Current

d)

Non rectified current

2.

How does A.C and D.C differs from each other ?

a)

The magnitude and direction of A.C do not change while changes in D.C

b)

Only magnitude changes in both A.C and DC

c)

The magnitude and direction of D.C do not change while changes in A.C

d)

Only Direction changes in both A.C and DC

3.

Name the Device and type of current as indicated by waveform

a)

DC generator ,DC

b)

DC motor , AC

c)

AC Generator , AC

d)

AC Generator , DC

4.

What type of current is flowing in the circuit ?

a)

Alternating current

b)

Direct current

c)

Both

d)

None

5.

An oscilloscope shows the current flow above what type of current is it showing?

a)

DC

b)

AC

c)

Rectified Current

d)

Non rectified current

6.

If you wrap more coils around an electromagnet, it will become...

a)

brighter

b)

stronger

c)

weaker

d)

invisible

7.

Passing a current through a solenoid will produce

a)

a magnetic field

b)

an electric field

c)

a current field

d)

nothing is produced

8.

The unit of magnetic flux is the

a)

Henry

b)

Tesla

c)

Faraday

d)

Weber

9.

Which of the following will increase the strength of an electromagnet?

a)

Use a Bigger Battery (More Current)

b)

Wrap More Coils

c)

Insert an Iron Core

d)

Use a Bigger Magnet

10.

Which of the following will increase the strength of an electric generator?

a)

Use a Bigger Magnet

b)

Move the Magnet Slower

c)

Wrap More Coils

d)

Use a Bigger Battery

11.

The capacitance of 1 μF equals

a)

10 ^-12 F

b)

10^-8 F

c)

10^-6 F

d)

10^-4 F

12.

Capacitor blocks__________ after long time.

a)

alternating current

b)

direct current

c)

both alternating and direct current

d)

neither alternating nor direct current

13.

What is the unit of inductance?

a)

Volt

b)

Ampere

c)

Watts

d)

Henry

14.

Inductor stores energy in the form of

a)

Electric field

b)

Electromagnetic field

c)

Magnetic field

d)

None of the above

15.

CHOOSE ONE OF THE FACTOR EFFECTING INDUCTOR________________

a)

COIL LENGTH

b)

COIL AREA

c)

NO.OF TURNS

d)

ALL OF THE ABOVE

16.

Select the circuit element as per given symbol

a)

b)

c)

d)

17.

Select the circuit element as per given symbol

a)

b)

c)

d)

18.

Select the circuit symbol as per given circuit element

a)

b)

c)

d)

19.

Select the symbol as per given circuit element

a)

b)

c)

d)

20.

Select the circuit element as per given symbol

a)

b)

c)

d)

Reset

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