Help
Contact
For teachers and institutes
Search courses, problems, tests…
A
A
>_
StemPy Lab
Courses ▾
Problems ▾
Practice ▾
Mock Tests
Classes
Community ▾
A
A
Silicon is doped with donors, 4.0 × 10²⁰ in each cubic… | StemPy Lab
Quizzes
/
Silicon is doped with donors, 4.0 × 10²⁰ in each cubic metre. At room temperature ni = 1.0 × 10¹⁶ m⁻³. Assume that every donor gives one electron. How many holes are there in each cubic metre?
Physics
Medium
High School (11–12)
Electronics
Created by
StemPy Lab
Silicon is doped with donors,
4.0
×
10
20
4.0 \times 10^{20}
4.0
×
1
0
20
in each cubic metre. At room temperature
n
i
=
1.0
×
10
16
m
−
3
n_i = 1.0 \times 10^{16}\ \text{m}^{-3}
n
i
=
1.0
×
1
0
16
m
−
3
. Assume that every donor gives one electron. How many holes are there in each cubic metre?
4.0
×
10
20
m
−
3
4.0 \times 10^{20}\ \text{m}^{-3}
4.0
×
1
0
20
m
−
3
1.0
×
10
16
m
−
3
1.0 \times 10^{16}\ \text{m}^{-3}
1.0
×
1
0
16
m
−
3
2.5
×
10
11
m
−
3
2.5 \times 10^{11}\ \text{m}^{-3}
2.5
×
1
0
11
m
−
3
4.0
×
10
4
m
−
3
4.0 \times 10^{4}\ \text{m}^{-3}
4.0
×
1
0
4
m
−
3
Check Answer
Log in to save
Tag someone
⚑ Report
← All Quizzes
← A student measures the resistance of a thermistor made of a semiconductor and of a copper wire, first in a cold bath and then in a warm bath. How do the two resistances change when the bath is warmed?
A p-n junction is connected to a battery with the positive terminal on the p side. Compare the junction with the same junction when it is not connected. What happens to the depletion layer and to the barrier? →
More on
Electronics
Discussion (0)
Log in
to join the discussion.
Loading…
All questions on this topic →
Problems on this topic
A logic circuit has two inputs A and B. Gate 1 is a NAND gate with inputs A and B…
Hard
A NAND gate is a universal gate. Use the standard constructions to find how many NAND gates are…
Medium
A circuit has three inputs A, B and C. Gate 1 is an AND gate with inputs A and B…
Medium
A transistor inverter has a supply of 5.0 V, a collector resistor of 1.0 kΩ, a base resistor of 47…
Medium
All problems on this topic →