Skip to content
MathsGenie logo
Quick links
Open app

Course home

  1. A Level
  2. Physics OCR A
  3. Question bank

Energy, power and resistance

EasyMediumHard
123456789101112131415
Question 13

An experimental sensor node in a remote weather station uses a heating resistor to prevent ice formation. The resistor has a resistance of 2.7 kΩ2.7\text{ k}\Omega2.7 kΩ and dissipates power at a rate of 12 W when active.

What is the potential difference across the resistor?

5.7 V5.7\text{ V}5.7 V

180 V180\text{ V}180 V

32 400 V32\,400\text{ V}32400 V

0.067 V0.067\text{ V}0.067 V

Energy, power and resistance Questions

  1. A Level
  2. /Physics
  3. /Energy, power and resistance