हिंदी

A Student Made an Electric Circuit Shown Here to Measure the Current Through Two Lamps. Are the Lamps in Series Or Parallel? (A) Are the Lamps in Series Or Parallel? (B) the Student Has Made a Mistake in this Circuit. What is the Mistake? (C) Draw a Circuit Diagram to Show the Correct Way to Connect the Circuit. Use the Proper Circuit Symbols in Your Diagram.

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प्रश्न

A student made an electric circuit shown here to measure the current through two lamps.

Are the lamps in series or parallel?  

(a) Are the lamps in series or parallel?
(b) The student has made a mistake in this circuit. What is the mistake?
(c) Draw a circuit diagram to show the correct way to connect the circuit. Use the proper circuit symbols in your diagram. 

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उत्तर

(a) The lamps are connected in series.
(b) The student has connected the ammeter in parallel with the lamps. It should be connected in series.
(c) The correct diagram that shows how to connect the circuit: 

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अध्याय 4: Electricity - Exercise 2 [पृष्ठ १९८]

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लखमीर सिंग Physics Part 1 [English] Class 10
अध्याय 4 Electricity
Exercise 2 | Q 32. | पृष्ठ १९८

वीडियो ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्न

1 A = _________ mA

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

What is the Flow of Charge Called?


If 20 C of charge pass a point in a circuit in 1 s, what current is flowing?


The p.d. across a 3 Ω resistor is 6 V. The current flowing in the resistor will be:

(a) `1/2A`
(b) 1 A
(c) 2 A
(d) 6 A


If the lamps are both the same in the figure given below and if A1 reads 0.50 A, what do A2, A3, A4 and A5 read? 


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. 

(d) Which circuit would have less current in it?

 


State the S.I. unit of current.


What type of electricity is supplied to us at houses?

What are the factors on which the resistance of a conductor depends? Distinguish between conductors and insulators.

Two cells each having an e.m.f. of 2 V and an internal resistance of \(2,\Omega\) are connected in series as shown in Fig. What is the current flowing through the circuit in each case?


In the circuit shown in fig., find the reading of the ammeter A when the switch S is opened.


What would be the danger involved in replacing a blown fuse with the one which would carry a large current?


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


An electric bulb is rated at 220 V, 100 W.

  1. What is its resistance?
  2. What safe current can be passed through it?

A bulb marked 12 V, 24 W operates on a 12 V battery for 20 minutes. Calculate:

  1. The current flowing through it, and
  2. The energy consumed.

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.


An electrical appliance is rated at 1000 KVA, 220V. If the appliance is operated for 2 hours, calculate the energy consumed by the appliance in: (i) kWh (ii) joule.


  1. What is meant by electric current?
  2. Name and define its unit.
  3. Which instrument is used to measure the electric current? How should it be connected in a circuit?

Which of the following correctly represents the formula for electric current?


The number of electrons required to produce a total charge of 1.6 C is:


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