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Write Down the Formula Which Relates Electric Charge, Time and Electric Current - Science

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प्रश्न

 Write down the formula which relates electric charge, time and electric current

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उत्तर

If a charge of Q coulombs flows through a conductor in time t seconds, the magnitude, I of the electric current flowing through it is given by: 

`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 19.1

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

Choose the correct alternative and rewrite the following sentence.

When the resistance of a conductor increases, the current will ________ increase.


One coulomb charge is equivalent to the charge contained in:

(a) 2.6 × 1019 electrons
(b) 6.2 × 1019 electrons
(c) 2.65 × 1018 electrons
(d) 6.25 × 1018 electrons


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


What actually travels through the wires when you switch on a light?


A flash of lighting carries 10 C of charge which flows for 0.01 s. What is the current? If the voltage is 10 MV, what is the energy?


(a) With the help of a circuit diagram, obtain the relation for the equivalent resistance of two resistances connected in parallel.
(b) In the circuit diagram shown below, find:

(i) Total resistance.
(ii) Current shown by the ammeter 


You can given one hundred 1 Ω resistors. What is the smallest and largest resistance you can make in a circuit using these?


Which effect of current is utilised in the working of an electric fuse?


In the network shown in the following adjacent Figure, calculate the equivalent resistance between the points.  

  1. A and B
  2. A and C

 


The following table shows the current in Amperes and potential differences in Volts.

  1. Find the average resistance.
  2. What will be the nature of the graph between the current and potential difference? (Do not draw a graph.)
  3. Which law will the graph prove? Explain the law.
V (volts) I (amp)
4 9
5 11.25
6 13.5

An electric kettle is rated 3 kW, 250 V. Give reason whether this kettle can be used in a circuit which contains a 13 A fuse.

State two characteristics of a fuse wire.

The metal case of an electric appliance is earthed. Explain the reason.

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

What do you mean by A.C.?

Tick(✓) the correct choice in the following:

Which of the following quantities has the same value for all electrical
appliances connected to the ring main circuit in a house?


Explain with the help of a diagram how does 'short circuiting' occur in an electric kettle.


Name the principle on which a transformer works.


An electric bulb is marked 100 W, 250 V. How much current will the bulb draw if connected to a 250 V supply?


An ammeter is always placed in parallel with the circuit.


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