## Related questions with answers

Question

What is the resistance of a lightbulb that uses an average power of 75.0 W when connected to a 60.0-Hz power source having a maximum voltage of 170 V?

Solution

VerifiedAnswered 2 years ago

Answered 2 years ago

Step 1

1 of 3The frequency of the source is given to be $f = 60$ Hz.

The angular frequency thus becomes

$\begin{align*} &\omega=2\pi\times\text{frequency} \tag{---formula1}\\ \\ &\omega=2\pi\times 60\\ \\ &\omega=120\pi \tag{---1}\\ \end{align*}$

The maximum voltage of the source is given to be $V_{max} = 170 \text{ V}$

R.M.S Voltage of the source in terms of maximum Voltage is given by

$\begin{align*} V_{rms} &= \dfrac{V_{max}}{\sqrt{2}}\\ \\ V_{rms} &= \dfrac{170}{\sqrt{2}}\\ \\ V_{rms} &= 120.208 \text{ V} \tag{---2}\\ \end{align*}$

## Create a free account to view solutions

By signing up, you accept Quizlet's Terms of Service and Privacy Policy

## Create a free account to view solutions

By signing up, you accept Quizlet's Terms of Service and Privacy Policy

## Recommended textbook solutions

#### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th Edition•ISBN: 9780133942651 (8 more)Randall D. Knight3,508 solutions

#### Mathematical Methods in the Physical Sciences

3rd Edition•ISBN: 9780471198260 (1 more)Mary L. Boas3,355 solutions

#### Fundamentals of Physics

10th Edition•ISBN: 9781118230718 (3 more)David Halliday, Jearl Walker, Robert Resnick8,971 solutions

## More related questions

- algebra

1/4

- algebra

1/7