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Current Electricity - Coggle Diagram

- - - - R(TOTAL) = (R1^-1 + R2^ -1 + R3^ -1)^-1
    - - R(TOTAL) = R1 + R2 + R3
  - - - Resistance can be varied
    - - Resistance is fixed
    - - They obey Ohm's law and the resistance remains constant under steady physical conditions
    - - Does not follow Ohm's law and the resistance can vary, as the I/V graphs are not a straight line
- - - - V(E) = V1 + V2
      - The current flowing through each bulb is the same
      - The sum of p.d. of the bulb is the e.m.f. of the battery
      - The light bulbs shine with the same brightness
  - - - I = I1 + I2
      - The potential difference of each bulb is equal to the e.m.f. of the battery