Electricity - Basic concepts

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Electricity - Basic concepts - 2

10 MCQs questions on electricity

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1. A voltmeter is used to find potential difference in any electrical circuit. Which of the statement given below is true : *

1 point

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

A voltmeter is a low resistance instrument and is connected in parallel circuit

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

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

2. A battery of 12V is connected in series with resisters of 0.2 ohm , 0.3 ohm,0.4 ohm,0.5 ohm and 0.6 ohm. How much current would flow through the 0.5 ohm resister? *

1 point

6 A

24 A

0.5 A

24 A

3. Among which of the following resistance does not depend : *

1 point

length of conductor

area of cross-section

temperature

density

4. In parallel combination of electrical appliances, total electrical power *

1 point

Increases

Decreases

Does not change

Remain same

5. The total work done by an electrical appliance during its operation, is called electrical *

1 point

Current

Power

Energy

Potential

6. The number of joules in 1kWh is *

1 point

3.6 x 10^7

3.6 x 10^6

3.6 x 10^5

3.6 x 10^4

7. When electric current flows through a conductor of resistance R, it *

1 point

Gains electrons

Loose electrons

Becomes hot

No change is observed

8. Heating of a current carrying conductor is due to *

1 point

Loss of kinetic energy by atoms

Loss of kinetic energy by electrons

Attraction between electrons

Repulsion between electrons ; protons

9. The correct relation between heat produced & electric current flowing *

1 point

H∝I

H∝I^2

H∝1/I

H∝1/I^2

10. The relation between H and I is called *

1 point

Newton’s law

Faraday’s law

Joule’s law

Ohm’s law

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