ECAT Pre Computer Science Chapter 13 MCQ Test With Answer

Top Scorers Of ECAT Physics Chapter 13 Current Electricity MCQ`s Test

Sr.#	Question	Answer
1	The interior of a hollow charged metal sphere is a region which:	A. Contain some magnitude of electric field B. Is full of electric field lines C. Is field-free region D. Either (A) or (B)
2	In gases, the charge carries are:	A. Electrons B. Positive ions C. Negative ions D. Both (A) and (C)
3	As the current flow through the wire:	A. It generates heat in the wire B. It produces sound in the wire C. Resistance of the wire decreases D. Voltage across the ends is increased
4	Selenium is:	A. An insulator B. A conductor C. Insulator in the dark and becomes conductor when exposed to light D. Conductor in the dark only
5	Two dissimilar metals joined at their ends kept at constant temperature constitute:	A. Cell B. Voltmeter C. Thermocouple D. Potentiometer
6	If the ends of a wire are connected to a battery an electric field E will be set up at:	A. The ends of the wire only B. Mid points of the wire only C. Every point within the wire D. At nodes only
7	In order to have a constant current through wire, the potential difference across its end should:	A. Be zero B. Be maintained constant C. Goes on increasing D. Go on decreasing
8	In gases, the charge carriers are:	A. Electrons B. Positive ions C. Negative ions D. Both A and C
9	Static electricity is produced by the transfer of:	A. Electrons B. Protons C. One fluid D. Two fluids
10	An example of photoconductor is:	A. Boron B. Carbon C. Iron D. Aluminum