मराठी

How Many Microamperes Are There in 1 Ampere?

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प्रश्न

How many microamperes are there in 1 ampere?

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उत्तर

1 ampere = 1,000,000 microamperes = `10^6` microamperes  

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पाठ 4: Electricity - Exercise 2

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लखमीर सिंह Physics [English] Class 10
पाठ 4 Electricity
Exercise 2 | Q 8.2

व्हिडिओ ट्यूटोरियलVIEW ALL [1]

संबंधित प्रश्‍न

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


Which unit could be used to measure current?

(a) Watt
(b) Coulomb
(c) Volt
(d) Ampere


A car headlight bulb working on a 12 V car battery draws a current of 0.5 A. The resistance of the light bulb is:

(a) 0.5 Ω
(b) 6 Ω
(c) 12 Ω
(d) 24 Ω


Draw a circuit diagram to show how two 4 V electric lamps can be lit brightly from two 2 V cells.


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. 

(a) Which circuit would have the highest voltage across each bulb?


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


Which effect of current is utilised in an electric light bulb?


Distinguish between an open and a closed circuit.


Where is the main fuse in a house circuit connected?

Tick(✓) the correct choice in the following:

When the length of a conductor is doubled the resistance of the conductor
will


Find the effective resistance in the following circuit diagrams (Fig.):


Three fuses available are rated at 2 A, 10 A and 13 A. Which fuse would you chose for an electric wire rated at 3 kW, 250 V? Show how you arrived at your answer.

Tick (✓) the correct choice among the following :
(a) A strong short bar magnet is dropped into a solenoid connected to a
galvanometer as shown in fig . The galvanometer shows a deflection to the left when the current in the coil as seen from above is counter clockwise. Which one of the following shows the correct deflection of the galvanometer when the magnet is at posi tions A, Band C.


Tick (✓) the correct choice among the following :

Which of the following changes would enable a millimeter to be used as a
direct current ammeter reading upto 1 A?


State whether the current is a scalar or vector?


Define the term kilowatt - hour and state its value in S.I. unit.


Answer the following question.
What is the function of a galvanometer in a circuit?


Which part of an electrical appliance is earthed?


Water : pipe :: Electric current : ______.


Match the items in column-I to the items in column-II:

Column - I Column - II
(i) electric current (a) volt
(ii) potential difference (b) ohm meter
(iii) specific resistance (c) watt
(iv) Electrical power (d) joule
(v) electrical energy (e) ampere

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