A power pack charging a cell phone battery has an output of 0.70A at 5.2V (both rms). What is the rms current at the 120V wall outlet where the power pack is plugged in?
Added by Meghan S.
Step 1
Given output current (I_out) = 0.70A and output voltage (V_out) = 5.2V. So, output power (P_out) = I_out * V_out = 0.70A * 5.2V = 3.64W. Show more…
Show all steps
Your feedback will help us improve your experience
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
'11. A power pack charging a cell phone battery has an output of 0.40 A at 5.2 V (both rms). What is the rms current at the 120 v wall outlet where the power pack is plugged in?'
Ankur S.
What is the rms current through a resistor of 470 ̦ connected to an AC power supply with a maximum voltage of 28 V? Please give your answer in mA.
Kamalesh B.
A $12.0$ - $\mathrm{V}$ battery supplies $20.0 \mathrm{~m} \mathrm{~A}$ to a resistive circuit. How much power does it provide?
Recommended Textbooks
University Physics with Modern Physics
Physics: Principles with Applications
Fundamentals of Physics
Transcript
Watch the video solution with this free unlock.
EMAIL
PASSWORD