Chapter 5 to Chapter 7

1.  What is the rate of flow of electric charges called?

(a)  Electric potential

(b)  electric conductance

(c)  Electric current

(d)  none of these

2.  Which of the following is the SI Unit of Electric Current?

(a)  ohm

(b)  ampere

(c)  volt

(d)  faraday

3.  Which instrument is used for measuring electric potential?

(a)  Ammeter

(b)  galvanometer

(c)  voltmeter

(d)  potentiometer

4.  When one unit electric charge moves from one point to another point in an electric circuit, then the amount of work done in joules is known as?

(a)  Electric current

(b)  electric resistance

(c)  electric conductance

(d)  potential difference

7.  The purpose of a rheostat is:

(a)  Increase the magnitude of current only

(b)  Decrease the magnitude of current only

(c)  Increase or decrease the magnitude of current

(d)  None of these