**Problem 5: A 10 watt resistor has a value of 120 Ω. What is rated current through the resistor?**

**Solution**

Quite easy. The resistance of the resistor and its power is given. Maximum current (rated current is the maximum allowed current) is to be found.

**Given** Power = P = 10 watt Resistance = R = 120

**Required** Current = I =?

Power is defined as P = VI = I^{2}R

Put the values

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P=I square R

I square =P/R

Taking square root on both side

I=underroot P/R

PUT values… Its pretty simple

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