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Lesson: Electric Potential Difference

Worksheet: Electric Potential Difference • 5 Questions

Q1:

Two parallel plates 10 cm on a side are given equal and opposite charges of magnitude C. The plates are 1.5 mm apart. What is the potential difference between the plates?

Q2:

The electric field strength between two parallel conducting plates separated by 4.00 cm is .

What is the potential difference between the plates?

The plate with the lowest potential is taken as zero potential. What is the electrical potential 1.00 cm from the zero potential plate and 3.00 cm from the other plate?

Q3:

Two parallel conducting plates are separated by 10.0 cm, and one of them is taken to be at zero volts.

What is the electric field strength between them, if the potential 8.00 cm from the zero volt plate (and 2.00 cm from the other) is 450 V?

What is the voltage between the plates?

Q4:

Two parallel conducting pates, each of cross-sectional area 400 cm2, are 2.0 cm apart and uncharged. electrons are transferred from one of the plates to the other plate.

What is the potential difference between the plates?

  • A V
  • B V
  • C V
  • D V
  • E V

What is the potential difference between the positively charged plate and a point between the plates that is 1.25 cm away from the positively charged plate and 0.75 cm away from the negatively charged plate?

  • A V
  • B V
  • C V
  • D V
  • E V

Q5:

A lightning bolt strikes a tree, moving 20.0 C of charge through a potential difference of MV.

How much energy was dissipated by the lightning strike?

  • A J
  • B J
  • C J
  • D J
  • E J

Assume that all of the energy supplied to the charge in the lightning strike is converted to heat. The specific heat capacity of water is J/kg⋅C and the specific latent heat of vaporization of water is kJ/kg. What mass of water could be raised from to its boiling point and then boiled by this energy?

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