Question

If a resistor is to carry 2 A of current and handle 100 W of power , how many ohms must it be ..? Assume that the voltage can be adjusted to any required value.

Answer 1

Since current of resistor is given as, $I =2A$

Power, $P=100W$

Resistance of the resistor, $R = \frac{P}{I^2}= \frac{100}{4} = 25\Omega$