Semiconductor and Circuit Quiz

The energy gap in a semiconductor is typically:

• 0 eV

• > 5 eV

• 1 eV

• < 0 eV

A pure semiconductor is called:

• Extrinsic

• Intrinsic

• Doped

• Alloyed

Which of the following is a pentavalent impurity?

• Boron

• Indium

• Gallium

• Arsenic

The unit of electron charge is:

• 1.6 × 10⁻¹⁹ C

• 9.1 × 10⁻³¹ C

• 3.2 × 10⁻¹⁹ C

• 1.6 × 10⁻¹⁹ V

The typical forward voltage drop across a silicon diode is:

• 0.1 V

• 0.3 V

• 0.7 V

• 1.1 V

The formula used to find the capacitance C is __________

• Q/v

• Qv

• Q-v

• Q + v

If a capacitor of capacitance 9.2F has a voltage of 22.5V across it. Calculate the energy of the capacitor.

• 5062.5W

• -506.25W

• 50.625W

• 50625W

If two resistances of 9 Ω and 6 Ω are connected in parallel, the total resistance is

• 54 Ω

• 0.3 Ω

• 15 Ω

• 3.6 Ω

Four 10F capacitors are connected in series, calculate the equivalent capacitance.

• 1.5F

• 2.5F

• 3.5F

• 0.5F

Calculate the charge in the circuit.

• 66.67C

• 20.34C

• 25.45C

• 30.45C