By Kirchoffs voltage law the sum of the voltage in the circuit. Consider the circuit with variable resistor R.
5V 10ohms
R
A. find a relationship between I and R in the circuit using E=I R and kirchoffs voltage law.
B. the power to a resistor is given by I^2R watts write P as a function of R.
C. Find the setting of the variable resistor R so that it takes max power
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