मराठी
तामिळनाडू बोर्ड ऑफ सेकेंडरी एज्युकेशनएस.एस.एल.सी. (इंग्रजी माध्यम) इयत्ता ७

______ is used to measure the electric current.

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प्रश्न

______ is used to measure the electric current.

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उत्तर

Ammeter is used to measure the electric current.

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पाठ 2: Electricity - Evaluation [पृष्ठ ३३]

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सामाचीर कलवी Science - Term 2 [English] Class 7 TN Board
पाठ 2 Electricity
Evaluation | Q II. 3. | पृष्ठ ३३

संबंधित प्रश्‍न

The atoms of copper contain electrons and the atoms of rubber also contain electrons. Then why does copper conduct electricity but rubber does not conduct electricity?


Which of the following equation shows the correct relationship between electrical unit? 

1A = 1C/s or 1c= 1A/s 


A 5 V battery is connected to two 20 Ω resistors which are joined together in series.

(a) Draw a circuit diagram to represent this. Add an arrow to indicate the direction of conventional current flow in the circuit.
(b) What is the effective resistance of the two resistors?
(c) Calculate the current that flows from the battery?
(d) What is the p.d. across each resistor?


How do you think the brightness of two lamps arranged in parallel compares with the brightness of two lamps arranged in series (both arrangements having one cell)?


If the current passing through a conductor is doubled, what will be the change in heat produced


Explain the meaning of the term kilowatt hour.

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.

Answer the following question.
An electric lamp of resistance 20 Ω and a conductor of resistance 4 0 are connected to a 6 V battery as shown in the circuit. Calculate: 

(a) the total resistance of the circuit,  

(b) the current through the circuit, 

(c) the potential difference across the  (i) electric lamp and (ii) conductor, and

(d) power of the lamp.


Water : pipe :: Electric current : ______.


Which of the following represents voltage?


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