A 22 microfarad capacitor is charged to 50 V. How much energy does it store (in microjoules)?

Answer and explanation

Correct answer: C. 27500 microjoules

  1. Step 1: Energy stored .
  2. Step 2: microjoules.
Answer
27500 microjoules.
Why not the others: 1100 microjoules: this is the charge in microcoulombs. 55000 microjoules: the factor one half was left out. 550 microjoules: was not squared.

Practise more Electricity and magnetism.

Free questions with an explanation for every one, and full timed Wazari Exam (Iraq Baccalaureate) - Scientific Branch mock tests.

All Electricity and magnetism questionsTake a mock test

More Electricity and magnetism questions