# Electrical Current MCQs Quiz Online Tests pdf Download

Practice MCQs on electrical current, physics quiz for online test prep learning. Electric current, potential difference and resistance quiz has multiple choice questions (MCQ), electrical current test questions and answers as semiconductors have electron number density of order, answer key with choices as 10^{24} m^{-3}, 10^{20} m^{-3}, 10^{12} m^{-3} and 10^{23} m^{-3} for competitive exam prep. Free study guide is to learn 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