# Electrical Current MCQs Quiz Online pdf eBooks Download

Learn electrical current MCQs, online A level physics MCQ for test prep. Electric current, potential difference and resistance quiz has multiple choice questions (MCQ), electrical current quiz questions and answers as semiconductors have electron number density of order, answer key help with choices as 10^{24} m^{-3}, 10^{20} m^{-3}, 10^{12} m^{-3} and 10^{23} m^{-3} problem solving for viva, competitive exam preparation, interview questions. Free study guide is to practice electrical current quiz online with MCQs to practice test questions with answers.

## MCQs on Electrical Current Quiz pdf Download

MCQ. Semiconductors have electron number density of order

- 10
^{24}m^{-3} - 10
^{20}m^{-3} - 10
^{12}m^{-3} - 10
^{23}m^{-3}

D

MCQ. If magnetic flux density and current are at right angles, then component of force acting on conductor is

- BIL cosθ
- BIL sinθ
- BIL tanθ
- BL sinθ

B

MCQ. When current is parallel to magnetic fields, force on conductor is

- zero
- infinite
- 2 times
- same

A

MCQ. If direction of current is from positive to negative, then it is called

- electronic current
- conventional current only
- positronic current
- protonic current

B