Solve
-The Maximum Number of Volts $E$ , That Can Be Placed Across a Resistor Is Given

Solve.
-The maximum number of volts, $E$ , that can be placed across a resistor is given by the formula $E = \sqrt { P R }$ , where $P$ is the number of watts of power that the resistor can absorb and $R$ is the resistance of the resistor in ohms. If a 2-watt resistor can have at most 20 volts of electricity across it, find the number of ohms of resistance of this resistor.

A) $800 \mathrm { ohms }$
B) $100 \mathrm { ohms }$
C) $200 \mathrm { ohms }$
D) $10 \mathrm { ohms }$

Correct Answer:

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