# International 10-20 Quiz

10 Questions | Total Attempts: 709  Settings  Test your knowledge of the international 10-20 system!

• 1.
If the measured circumference of a patient is 60cm what is the distance between Fpz and T4?
• A.

15cm

• B.

18cm

• C.

21cm

• D.

23cm

• 2.
What electrode site is half way between T3 and T4?
• A.

F4

• B.

Cz

• C.

Pz

• D.

C3

• 3.
If the measured distance from Nasion to Inion is 36cm what is the distance between Fpz and Fz?
• A.

7.2cm

• B.

6.8cm

• C.

10.8cm

• D.

8cm

• 4.
If the measured distance between Fp1 and O1 is 32cm what is the distance from F3 to P3?
• A.

13cm

• B.

18cm

• C.

15cm

• D.

16cm

• 5.
What electrode site is between Fp2 and T4?
• A.

F4

• B.

F8

• C.

Fz

• D.

P4

• 6.
If the measured circumference is 58cm what is the distance between Fpz and Oz?
• A.

29cm

• B.

27cm

• C.

18cm

• D.

35cm

• 7.
If the measured distance between the left and right pre-auricular curves are 41cm what is the distance between C3 and C4?
• A.

20.5cm

• B.

14cm

• C.

18.2cm

• D.

16.4cm

• 8.
What electrode site is between Pz and T6?
• A.

T4

• B.

P4

• C.

O2

• D.

T3

• 9.
If the measured distance from F7 to F8 is 22cm what is the distance from Fz to F4?
• A.

11cm

• B.

6.5cm

• C.

5.5cm

• D.

4.4cm

• 10.
What electrode site is between T3 and O1?
• A.

F7

• B.

P3

• C.

C3

• D.

T5

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