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What do the following symbols mean in ci...

What do the following symbols mean in circuit diagrams?

A

(i) Closed plug key (ii) Variable resistance

B

(i)resistance (ii) closed plug key

C

(i) Variable resistance (ii) Closed plug key

D

(i) variable resistance (ii) open plug key

Text Solution

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The correct Answer is:
C
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LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. Which of the two is connected in series: ammeter or voltmeter?

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  2. Compare how an ammeter and a voltmeter are connected in a circuit.

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  3. What do the following symbols mean in circuit diagrams?

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  4. If 20 C of charge pass a point in a circuit in 1s, what current is flo...

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  5. A current of 4A flows around a circuit for 10s. How much charge flows ...

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  6. What is the current in a circuit if the charge passing each point is 2...

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  7. Fill in the following blanks with suitable words: (a) A current is a...

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  8. (a) Name a device which helps to maintain potential difference across ...

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  9. (a) What is an electric current? What makes an electric current flow i...

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  10. What is an ammeter? How is it connected in a circuit? Draw a diagram t...

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  11. (a) Write down the formula which relates electric charge, time and ele...

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  12. आदर्श अमीटर का प्रतिरोध क्या होना चाहिए ?

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  13. Draw circuit symbols for (a) fixed resistance (b) variable resistance ...

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  14. What is a circuit diagram? Draw the labelled diagram of an electric ci...

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  15. If the charge on an electron is 1.6 xx 10^(-19) coulombs, how many ele...

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  16. The p.d. across a lamp is 12 V. How many joules of electrical energy a...

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  17. In 20s, a charge of 25 C leaves a battery, and 200J of energy are deli...

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  18. (a) Define electric current. What is the SI unit of electric current. ...

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  19. The outer name of potential difference is:

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  20. Which statement/statement is/are correct? 1. An ammeter is connected...

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