Finding What's Missing In A Circuit

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To find missing values in a circuit, use Ohm's Law, which states that Voltage (V) equals Current (I) times Resistance (R), or V = I * R. If you know two of the three values (amps, ohms, volts), you can rearrange the formula to solve for the missing one. For example, if you have voltage and resistance, you can find current by rearranging the formula to I = V / R. Similarly, if you have current and resistance, you can find voltage using V = I * R. Understanding these relationships will help you complete your worksheet effectively.
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My Physics teacher has given us a worksheet that shows circuits and I have to find what is missing (Eg: the amps, ohms, and volts). Let's pretend that I have been sleeping in his class and I have no idea what is going on. Could you tell me, as simple as you can, what I must do to find missing amps, ohms, and volts, with only little information given?

Thanks,
A clueless soul...
 
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