Question

Which of the given is the SI Unit of Electric Current?



A. Ohm

B. Ampere

C. Volt

D. Faraday

2.The hindrance presented by material of conductor to the smooth passing of electric current is known as:



A. Resistance

B. Conductance

C. Inductance

D. None of these

3.A fuse wire is inserted in which wire?



A. Live wire

B. In the neutral wire

C. In the earth wire

D. May be connected in any line

4.The rate of flow of an electric charge is known as :


A. Electric potential

B. Electric conductance

C. Electric current

D. None of these

5.The instrument used for measuring electric current is


A. Ammeter

B. Galvanometer

C. Voltmeter

D. Potentiometer

6.The amount of work done in joules, when one unit electric charge moves from one point to another point in an electric circuit is called :

A. Electric current

B. Electric resistance

C. Electric conductance

D. Potential difference

7.The unit of potential difference is :



A. Volt

B. Ohm

C. Ampere

D. Faraday

8.The relation between potential difference (V) and current (I) is :



A. V α I2

B. V α 1/I

C. V2 α I

D. V α I

9.The relation between potential difference (V) and current (I) was discovered by :



A. Newton

B. Ampere

C. Ohm

D. Volta

10.The SI unit of resistance is :



A. Newton

B. Ohm

C. Watt

D. Joule

11.Which of the given statements is not true, regarding the electrical set-up for the verification of Ohm’s law:


A. The voltmeter is connected in parallel with the known resistance

B. The ammeter is connected in series circuit

C. The rheostat can only increase the resistance in electric circuit

D. The single key is used to switch on/off the electric circuit

12.A voltmeter is used to find p.d. in any electrical circuit which of the statement given below is true :



A. A voltmeter is a high resistance instrument and is connected in series circuit

B. A voltmeter is a low resistance instrument and is connected in series circuit

C. A voltmeter is a high resistance instrument and is connected in parallel circuit

D. A voltmeter is a low resistance instrument and is connected in series circuit

13.On which of the given resistance does not depend :

A. Length of conductor

B. Area of cross-section

C. Temperature

D. Density

14.In parallel combination of electrical appliances, total electrical power



A. Increase

B. Decrease

C. Does not change

D. Remain same

15. If length of a conductor and it's radius is increased twice, how the resistance will change?



A. Resistance will remain unchanged

B. Resistance increase twice

C. Resistance will become half

D. Resistance will increase 4 times

16. The potential difference applied is directly proportional to current only if



A. Always

B. Never

C. Sometimes

D. When temperature is

17.There is wire of length I and cross section A. Which of the given have least resistance?


A. Length doubled, Area halved

B. Length tripled, Area doubled

C. Length halved, Area doubled

D. The original

18. In SI unit, JC⁻¹ is equal to


A. Volt

B. Newton's law

C. Pascal

D. Omega

19.If the current flowing through a fixed resistor is halved, the heat produced in it will become:


A. Double

B. Half

C. One-fourth

D. Four times

20. The resistivity of copper metal depends on only one of the following factors. This factor is:

A. Length

B. Thickness

C. Temperature

D. Area of cross-section​

Answer 1

Answer:

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Answer 2

Answer:

How the charge will flow