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Worksheets

Electric current

Total questions: 26

Worksheet time: 14mins

Name
Class
Date
1.

Tera

(a)  

2.

G

(a)  

3.

M

(a)  

4.

10e-3

a)

m

b)

n

c)

p

d)

T

5.

10e-12

a)

p

b)

m

c)

n

d)

k

6.

10e-9

a)

m

b)

n

c)

p

d)

k

7.
The SI unit for measuring mass is the
 __?__.
a)
meter (m)
b)
liter (L)
c)
cubic meter (m3)
d)
kilogram (kg)
8.
The SI unit for temperature is __?__.
a)
degree fahrenheit  (° F)
b)
degree celsius  (° C)
c)
kelvin  (K)
d)
degree centigrade  (°C)
9.

109 W =

a)

MW

b)

GW

c)

TW

d)

PW

10.

10-9 second =

a)

1 ns

b)

1 ms

c)

1micro second

d)

1 Gs

11.
Convert 12 km to m
a)
120 m
b)
1,200 m
c)
12,000 m
d)
120,000 m
12.

What is the SI unit for energy?

a)

Joules, J

b)

Watts, W

c)

Energons, E

d)

Amps, A

13.

What is the symbol for Power?

a)

P

b)

W

c)

E

d)

F

14.

What is the SI unit for voltage?

a)

Volts

b)

Amps

c)

Watts

d)

Joules

15.

What is the SI unit for current?

a)

Amps

b)

Volts

c)

Joules

d)

Watts

16.

What is the SI unit for resistance?

a)

Ohms

b)

Watts

c)

Joules

d)

Amps

17.

What is the symbol for current?

a)

I

b)

R

c)

A

d)

V

18.

What is the symbol for resistance?

a)

R

b)

V

c)

I

d)

A

19.

What is the symbol for volts?

a)

V

b)

c

c)

R

d)

A

20.

How many seconds in 1 hour?

a)

3600

b)

60

c)

216000

d)

170

21.

The capacitance of 1 μF equals


a)

10 -12 F

b)

10-8 F

c)

10-6 F

d)

10-4 F

22.

Capacitance is measured in___________

a)

Coulombs

b)

Farads

c)

Hz

d)

Volts

23.

Unit of capacitance is___________

a)

Volts

b)

Farad

c)

Henry

d)

Newton

24.

A 5uF, a 10uF and a 20uF capacitor are connected in PARALLEL to a 6V battery. Calculate the total equivalent capacitance of the circuit?

a)

35uF

b)

0,35uF

c)

2,857uF

d)

0,0286uF

25.

What formula does the above formula represent?

a)

Parallel capacitance

b)

Series resistance

c)

Parallel resistance

d)

Series capacitance

26.

The capacitance of 1 μF equals

a)

10-4 F

b)

10-6 F

c)

10-8 F

d)

10 -12 F