Q.1
What is the unit of current?
  • Volts
  • Ohms
  • Amperes
  • Joules
Q.2
What is the formula for potential difference?
  • V = W⁄Q
  • V = W⁄2Q
  • V = 3W⁄2Q
  • V = 5W⁄3Q
Q.3
What is the unit of charge?
  • Volts
  • Ohms
  • Coulombs
  • Amperes
Q.4
What is potential difference?
  • Work done per coulomb of charge that passes between two points
  • Kinetic energy per coulomb of charge that passes between two points
  • Work done per coulomb of charge that passes between three points
  • Work done per ampere of current that passes between two points
Q.5
What is electrical current?
  • Flow of electric charge
  • Flow of protons
  • Flow of neutrons
  • Flow of water
Q.6
What is the work done in a circuit if the voltage is 10 V, the current is 4 A and the circuit is on for 25 seconds?
  • 200J
  • 500J
  • 800J
  • 1000J
Q.7
Which formula calculates the size of the current?
  • I = Q x t
  • I = Q⁄t
  • I = t⁄Q
  • Q = I⁄t
Q.8
What can be calculated from current-potential difference graphs?
  • Resistivity
  • Magnetism
  • Resistance
  • None of the above
Q.9
What is the size of the current in a circuit if the charge, Q, is 100 C and lasts for 25 seconds?
  • 1A
  • 2A
  • 3A
  • 4A
Q.10
What does the size of the electric current depend on?
  • The rate of flow of electric charge
  • The rate of flow of protons
  • The rate of flow of neutrons
  • All of the above
0 h : 0 m : 1 s