Electric Potential and Potential Difference
Physics ⇒ Electricity and Magnetism
Electric Potential and Potential Difference starts at 10 and continues till grade 12.
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See sample questions for grade 10
Define 1 volt.
Describe what happens to the potential energy of a positive charge as it moves from a point of higher potential to lower potential.
Explain why a bird can sit safely on a high-voltage wire without being electrocuted.
Explain why potential difference is necessary for the flow of electric current.
Explain why the potential inside a conductor is constant in electrostatic equilibrium.
Name the device used to measure potential difference.
State the difference between electric potential and potential difference.
A student connects a voltmeter across a resistor in a circuit and observes a reading of 6 V. If 3 C of charge passes through the resistor, how much energy is converted?
Which instrument is used to compare the potential difference between two points very accurately?
(1) Voltmeter
(2) Ammeter
(3) Potentiometer
(4) Galvanometer
Which of the following best describes potential difference?
(1) The energy per unit charge
(2) The force per unit charge
(3) The charge per unit energy
(4) The current per unit resistance
Which of the following is NOT a unit of potential difference?
(1) Joule/Coulomb
(2) Volt
(3) Ampere
(4) V
Which of the following is NOT true about electric potential?
(1) It is measured in volts
(2) It is a scalar quantity
(3) It is the same as electric field
(4) It can be positive or negative
Fill in the blank: The potential at a point due to a point charge q at a distance r is given by V = ______.
Fill in the blank: The potential difference between two points is measured in ______.
Fill in the blank: The work done in moving a charge in an electric field depends on the ______ difference between the two points.
Fill in the blank: The work done in moving a charge of 1 coulomb through a potential difference of 1 volt is ______ joule.
True or False: A voltmeter is always connected in parallel across the component whose potential difference is to be measured.
True or False: Electric potential is a scalar quantity.
True or False: The higher the potential difference, the greater the current for a given resistance.
True or False: The potential at infinity is considered to be zero.
