Physics, Fields, Particles and frontiers of Physics (G485) Definitions

Just a quiz on the key definitions needed for Unit 2 A2 Physics.

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  • Created by: NumNub
  • Created on: 08-04-13 17:25

1. Electric Field Strength

  • Force per unit positive charge
  • Force per unit negative charge
  • Force per unit charge over a defined area
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Other questions in this quiz

2. Decay Constant, λ

  • The fraction of atoms decaying in unit time
  • The number of atoms decaying in unit time
  • The frequency of atoms decaying in unit time

3. Lenz's Law

  • The direction of the e.m.f. is such that it opposes the change causing it.
  • The direction of the induced e.m.f. is such that it opposes the change causing it.
  • The direction of the induced e.m.f. is such that it is in the same direction as the change causing it.

4. Isotopes

  • Two nuclides (an atom with a distinct number of protons and neutrons) with the same number of protons but different numbers of neutrons
  • Two nuclides (a nucleus with a distinct number of protons and neutrons) with the same number of protons but different numbers of neutrons
  • Two nuclides (an atom with protons and neutrons) with the same number of protons but different numbers of neutrons

5. Magnetic Flux Density

  • A measure of the strength of a magnetic field, defined by: B/ILsinθ, where B = magnetic flux density (T), I = current in the wire (A), l = length of the wire (m), F = the force experienced (N) and θ = the angle between the wire and the field.
  • A measure of the strength of a electric field, defined by: B/ILsinθ, where B = magnetic flux density (T), I = current in the wire (A), l = length of the wire (m), F = the force experienced (N) and θ = the angle between the wire and the field.
  • A measure of the strength of a magnetic field, defined by: BILsinθ, where B = magnetic flux density (T), I = current in the wire (A), l = length of the wire (m), F = the force experienced (N) and θ = the angle between the wire and the field.

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