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By What Name is the Physical Quantity Coulomb/Second Called? - Science

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प्रश्न

By what name is the physical quantity coulomb/second called?

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उत्तर

The electric current is the physical quantity that is expressed as coulomb/second since current, I = Q/t.

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अध्याय 1: Electricity - Exercise 2

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लखमीर सिंग Physics (Science) [English] Class 10
अध्याय 1 Electricity
Exercise 2 | Q 1

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संबंधित प्रश्न

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

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


Why should the resistance of: 

 an ammeter be very small?


One coulomb of charge flows through any cross-section of a conductor in 1 second. What is the current flowing through the conductor?


Which type of circuit, series or parallel, is preferred while connecting a large number of bulbs: 

(a) for decorating a hotel building from outside?


Ten bulbs are connected in a series circuit to a power supply line. Ten identical bulbs are connected in a parallel circuit to an identical power supply line. 

(c) In which circuit, if one bulb blows out, all other will stop glowing?


Consider the circuit given below when A, B and C are three identical light bulbs of constant resistance.   

(a) List the bulbs in order of increasing brightness.
(b) If C burns out, what will be the brightness of A now compared with before?
(c) If B burns out instead, what will be the brightness of A and C compared with before?


Calculate the effective resistance between the points A and B in the network shown below in Figure 8.45   


An electric current flowing in a wire creates ______ around the wire. 


What do you mean by 'power-voltage' rating of electrical appliances?

What do you mean by direct current?

Can a copper wire be used as a fuse wire?

The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.

Name the two arrangements. Which of them would you prefer in a household circuit? Give a reason for your answer.

Tick(✓) the correct choice in the following:

A three pin plug is connected to the lead for a 1 kW electric iron to be
used on a 250 V supply. Which of the following statements is not correct?


Two cells each having an e.m.f. of 2 V and an internal resistance of 2Ω are
connected (a) In series, and ( b) In para 1le l as shown in fig. . What is the
current flowing through the cir cu it in each_ case?


An electric oven is rated as 1.5 kW, 250 V. If it is connected to a 250 V mains, calculate the
(a) Current drawn,
(b) Energy consumed in 20 hours,
(c) Cost of energy consumed in 20 hours at the rate of Re. 1 per unit.


An electric bulb is rated 250 W, 230 V. 

  1. the energy consumed in one hour, and
  2. the time in which the bulb will consume 1.0 kWh energy when connected to 230 V mains.

Fill in the blank :

1 mA = ............................. A.


Two electric bulbs rated 100 W; 220 V and 60 W; 220 V are connected in parallel to electric mains of 220 V. Find the current drawn by the bulbs from the mains.


What is the speed of electric current?


A current of 2A passing through the conductor produces 80 J of heat in 10 seconds. The resistance of the conductor is ______.


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