The power developed in a circuit is given by P = 10I-8I^2 where I is the current in amps. determine the current required to produce a power of 1.75 watts in th circuit.

Many thanks.

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- Feb 19th 2009, 08:28 AMStazzer5Determine the current
The power developed in a circuit is given by P = 10I-8I^2 where I is the current in amps. determine the current required to produce a power of 1.75 watts in th circuit.

Many thanks. - Feb 19th 2009, 10:22 AMrunning-gag
Hi

You need to solve $\displaystyle 10I-8I^2=1.75$ which is a second degree polynomial equation.

Do you know how to solve this type of equation ? - Feb 19th 2009, 11:58 AMStazzer5
hi there,

Thank you for your help. I dont know how to work this out.

Thanks again

could you show me please?

thanks - Feb 20th 2009, 01:09 AMmr fantastic