Question

A device consume 100w of power when connected to a 100 v source.
Calculate its resistance

Answer 1

To calculate the resistance, we can use Ohm's Law, which states that resistance (R) is equal to the ratio of voltage (V) to current (I):

R = V/I

We know that the power (P) is equal to the product of voltage and current:

P = V * I

In this case, the power is given as 100 watts, and the voltage is given as 100 volts. We can rearrange the equation for power to solve for current:

I = P/V

Substituting the given values, we find:

I = 100 watts / 100 volts = 1 ampere

Finally, we can use Ohm's Law to calculate the resistance:

R = V/I = 100 volts / 1 ampere = 100 ohms

Therefore, the resistance of the device is 100 ohms.