Equivalent Capacitance

If the charge on a parallel-plate capacitor is doubled:

• the capacitance is halved 
• the capacitance is doubled 
• the electric field is halved 
• the electric field is doubled

Capacitors C₁ and C₂ are connected in series. The equivalent capacitance is given by: 

• C₁C₂/(C₁ + C₂) 
• (C₁ + C₂)/C₁C₂
• 1/(C₁ + C₂) 
• C₁ + C₂

If 4μF and 2μF capacitors are conneced in series, the equivalent capacitor is ___________.

• 1.33μF
• 0.75μF
• 6μF
• 2μF

With respect to the capacitor, which relationship is true?

• C = Q/V
• V = C×Q
• Q = C/V
• Q = V/C

When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is

• C = C₁ + C₂ + C₃

• 1/C = 1/C₁ + 1/C₂ + 1/C₃

• C = QV₁ + QV₂ + QV₃

• C = CR₁ + CR₂ + CR₃

If 4μF and 2μF capacitors are conneced in series, the equivalent capacitor is ___________.

• 1.33μF
• 0.75μF
• 6μF
• 2μF

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

Capacitors C₁ and C₂ are connected in parallel and a potential difference is applied to the combination. If the capacitor that is equivalent to the combination has the same potential difference, then the charge on the equivalent capacitor is the same as: 

• the charge on C₁
• the sum of the charges on C₁ and C₂
• the difference of the charges on C₁ and C₂
• the product of the charges on C₁ and C₂

Each of the four capacitors shown is 500 mF.  The voltmeter reads 1000V.  The magnitude of the charge on each capacitor plate is:

• 0.2 C
• 0.5 C
• 20 C
• 50 C

When capacitors is arrange in series (3 capacitors), the equivalent capacitance C is

• C = C₁ + C₂ + C₃

• 1/C = 1/C₁ + 1/C₂ + 1/C₃

• C = QV₁ + QV₂ + QV₃

• C = CR₁ + CR₂ + CR₃