Capacitance and Capacitors

Two capacitors X and Y of capacitances 2 F and 4 F respectively are connected in series with a 12 battery. Which of the following statements is CORRECT?

• The effective capacitance is 6 F.

• Capacitors have the same charge of 36 C.

• The potential difference across the capacitor X is 8 V.

• The potential difference across the capacitors Y is 12 V.

Two capacitors of capacitance C₁ and C₂ are connected in parallel. What is the effective

capacitance?

• C₁C₂

• C₁+C₂

Capacitance is measured in___________

• Coulombs

• Farads

• Hz

• Volts

The insulating layer of a capacitor is called the

• plate

• conductors

• dielectric

• terminals

The energy of a charged capacitor is given by the expression (Q = charge on the conductor and C = its capacity)

A capacitor is charged to 200 volt it has 0.1 coulomb charge. When it is discharged, energy will be

• 1 J

• 4 J

• 20 J

• 10 J

Tags

NGSS.HS-PS3-2

What is the voltage across   the plates of the capacitor if  the capacitance is 10 uF and the Charge stored is  30 uC?

• 0.333 V

• 3 V

• 300 V

If capacitors are connected in parallel, then potential difference across each capacitor is

• same

• zero

• different

• infinite

Change Q on a capacitor varies with voltage V . The area of triangle OAB represents

• Capacitance

• Capacitive reactance

• Magnetic field between the plates

• Energy stored in the capacitor

When capacitors are connected in series, the equivalent capacitance is:

• The sum of the individual capacitances.

• The product of the capacitances divided by the sum of the capacitances.

• Equal to the highest capacitance.

• The reciprocal of the sum of the reciprocals of the individual capacitances.