What is the resistance of a component that develops 0.75W if 30mA flows through it?

To find the resistance, we can use Ohm's law which states that Voltage (V) = Current (I) * Resistance (R).

But first, we need to find the voltage. We can use the formula for power (P) which is P = V * I.

Given that power (P) = 0.75W and current (I) = 30mA = 0.03A, we can rearrange the power formula to find voltage (V):

V = P / I = 0.75W / 0.03A = 25V

Now that we have the voltage, we can substitute it into Ohm's law to find the resistance (R):

R = V / I = 25V / 0.03A = approximately 833.33 ohms

So, the resistance of the component is approximately 833.33 ohms.