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Why Should the Resistance Of: a Voltmeter Be Very Large? - Science

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प्रश्न

Why should the resistance of: 

a voltmeter be very large?

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उत्तर

A voltmeter should have a high resistance so that it can take only a negligible amount of current from the circuit.

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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 20.2

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संबंधित प्रश्न

Draw the electrical symbols of the following components and state its use:

Rheostat (variable resistance)


Why should the resistance of: 

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What is the p.d. across the battery?


A battery of 9 V is connected in series with resistors of 0.2 Ω, 0.3 Ω, 0.4 Ω, 0.5 Ω and 0.12 Ω. How much current would flow through the 12 Ω resistor?


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

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Using the circuit given below, state which of the following statement is correct?  

(a) When S1 and S2 are closed, lamps A and B are lit.22
(b) With S1 open and S2 closed, A is lit and B is not lit.
(c) With S2 open and S1 closed A and B are lit.
(d) With S1 closed and S2 open, lamp A remains lit even if lamp B gets fused.


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A 720 W heater operates from a 220 V line voltage. Calculate:
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What is international convention of colour coding in a cable?


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State whether the current is a scalar or vector?


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