Electric field and Capacitors

The capacitance of a parallel-plate capacitor can be increased by: 

• increasing the charge 
• decreasing the charge 
• increasing the plate separation
• decreasing the plate separation 

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

• 0.333 V

• 3 V

• 300 V

The capacitance of a parallel-plate capacitor is:

• proportional to the plate area

• independent of any material inserted between the plates

• proportional to the charge stored

• proportional to the potential difference of the plates

The capacitance of a parallel-plate capacitor can be increased by:

• increasing the charge

• decreasing the charge

• increasing the plate separation

• decreasing the plate separation

which the following is wrong about capacitors:

• is electronic device which store the electric charge

• is device composed of two conductors separated by an insulator

• is device composed of two insulators separated by an conductors

• connect the positive plate with positive of battery

which of the following is symbol of capacitor ?

• 
• 
• 
• 

Capacitance is measured in___________

• Coulombs

• Farads

• Hz

• Volts

With respect to the capacitor, which relationship is true?

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

The two parallel plates hold +600 µC and -600 µC of charges respectively when 20 V potential difference is applied across the plates. What is its capacitance?

• 60µF

• -60µF

• 30µF

• -30µF

If the capacitance is 47μF, and the voltage difference across the capacitor terminals is 6V, then the energy stored in that capacitor is:

• 846×10^-6Joule
• 7.23×10^-3 Joule
• 6.76×10^-5Joule
• 5.94×10^-2Joule

Tags

NGSS.HS-PS3-1