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Sensing-Electricity Questions Help!

  1. Oct 28, 2005 #1
    I am struggling on the following questions and require help. Please reply as soon as possible.
    1.720 cells are connected together to form a solar panel to power a remote telephone. The individual cells are connected in a grid of x cells in series and then these series lines joined in parallel with each other forming y parallel lines. What are the values of x and y to give an emf of 15V and using all 720 cells?
    2.A thermistor is set up in a potential divider with a resistor R across a 5v power supply. A voltage is taken across the resistor R. Derive an equation for how this voltage depends on the value of R, the 5V and RTH
    Thanks in advance!
  2. jcsd
  3. Oct 29, 2005 #2


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    If you show us how you tried to solve your problems and where you are getting stuck, we can attempt to steer you in a successful direction.
    I recommend seeing this thread
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