General Physics 2 Q4 Exams

It is the unit of capacitance

• Coulomb

• Volts

• Farad

• Ampere

Which of the following refers to the function of a capacitor?

• It dissipates voltage across the circuit.

• It absorbs and stores electrical charge.

• It acts as the main source of electric potential

• It allows DC signals to pass through.

Capacitor stores which type of energy?

• kinetic energy

• potential energy

• vibrational energy

• heat energy

Why does capacitor block dc signal at steady state?

• Due to high frequency of dc signal.

• Due to zero frequency of dc signal.

• Capacitor does not pass any current at steady state.

• Due to zero frequency of dc signal.

If a parallel plate capacitor of plate area 2 m² and plate separation of 1 m stores the charge of 1.77 x 10^-11 C, what is the voltage across the capacitor?

• 1 V

• 2 V

• 3 V

• 4 V

Which of the following is a passive device?

• Transistor

• Rectifier

• Capacitor

• Vacuum Tubes

What is the value of capacitance of a capacitor which has a voltage of 4V and has 16C of charge?

• 2 F

• 4 F

• 6 F

• 8 F

Of which medium is capacitance high?

• Air

• Mica

• Water

• Metal

What is the voltage of a battery connected to a parallel plate capacitor with a plate area of 2.0 cm² and a plate separation of 2 mm if the charge stored on the plates is 4.0 pC?

• 4.4 V

• 4 V

• 4.2 V

• 4.5 V

A typical capacitor in a memory cell have a capacitance of 3 x 10^-14 F. If the voltage across the capacitor is 0.5 V, what is the number of electrons that must move to the capacitor to charge it?

• 93750

• 94500

• 92350

• 96430