मराठी

Which of the Following Units Could Be Used to Measure Electric Charge? (A) Ampere (B) Joule (C) Volt (D) Coulomb - Science

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प्रश्न

Which of the following units could be used to measure electric charge?

(a) ampere
(b) joule
(c) volt
(d) coulomb

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उत्तर

 coulomb
It is the SI unit of electric charge 

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पाठ 1: Electricity - Exercise 1

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व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

1 A = _________ mA

  1. 102
  2. 103
  3. 10-3
  4. 10-6

 In which direction does conventional current flow around a circuit?


State the factors on which the strength of electric current flowing in a given conductor depends.


The circuit diagram given below shows the combination of three resistors R1, R2 and R3

  

Find :
(i) total resistance of the circuit.
(ii) total current flowing in the circuit.
(iii) the potential difference across R1.

 

 


A p.d. of 6 V is applied to two resistors of 3 Ω and 6 Ω connected in parallel. Calculate:

(a) the combined resistance
(b) the current flowing in the main circuit
(c) the current flowing in the 3 Ω resistor. 

  


Which effect of current is utilised in an electric light bulb?


A wire of uniform thickness with a resistance of 27Ω is cut into three equal pieces and they are joined in parallel. Find the equivalent resistance of the parallel combination. 


State the law which relates the current in a conductor to the potential difference across its ends.

Calculate the amount of energy transferred by a 10 A electric current flowing through a resistor of 5 o for 15 minutes.


A 200 v electric transfer draws an electric current of 11 A. What is its electrical resistance?

Is kWh the unit of electrical energy?

What is international convention of colour coding in a cable?


Draw a labeled diagram of a three pin socket.

Find the effective resistance in the following circuit diagrams (Fig.):


The following appliances are to be used on 240 V supply. Calculate the current used by each and say which fuse, 2 amp, 5 amp or 13 amp should be incorporated with each, (i) A television rated at 150 W, (ii) An electric iron rated at 750 W, (iii) An immersion heater rated at 3000 W, (iv) A hair dryer rated at 500 W. How much will it cost to run the television set for 100 days for an average of 4 hours a day at 60 paise per unit?


Calculate the current through a 60 W lamp rated 250 V. If the line voltage falls to 200 V, how is power consumed by the bulb affected?


Three heaters each rated 250 W, 100 V are connected in parallel to a 100 V supply. The resistance of each heater


A bulb is connected to a battery of p.d. 4 V and internal resistance 2.5 Ω . A steady current of 0.5 A flows through the circuit. Calculate:

The energy dissipated in the bulb in 10 minutes.


State the condition when it is advantageous to connect cells in series.


Match the items in column-I to the items in column-II:

Column - I Column - II
(i) electric current (a) volt
(ii) potential difference (b) ohm meter
(iii) specific resistance (c) watt
(iv) electrical power (d) joule
(v) electrical energy (e) ampere

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