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प्रश्न
Which is the better way to connect lights and other electrical appliances in domestic wiring: series circuits or parallel circuits? why?
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उत्तर
Parallel circuits – Because if one electrical appliance stops working due to some defect, then all other appliances in the circuit will keep working properly.
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संबंधित प्रश्न
Fill in the blank:
To increase the effective resistance in a circuit the resistors are connected in _____________.
Which particles constitute the electric current in a metallic conductor?
Which of the following equation shows the correct relationship between electrical unit?
1A = 1C/s or 1c= 1A/s
Fill in the folloing blank with suitable words:
Current is measured in ............... using an ............... placed in ............... in a circuit.
What is an Ammeter? How is It Connected in a Circuit? Draw a Diagram to Illustrate Your Answer.
Which instrument is used to measure electric current? How should it be connected in a circuit?
If the amount of electric charge passing through a conductor in 10 minutes is 300 C, the current flowing is:
(a) 30 A
(b) 0.3 A
(c) 0.5 A
(d) 5 A
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
What happens to the other bulbs in a series circuit if one bulb blows off?
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?
Which effect of current is utilised in the working of an electric fuse?
A given wire of resistance 1 Ω is stretched to double its length. What will be its new resistance?
A battery of e.m.f. 15 V and internal resistance 3 ohm is connected to two resistors of resistance 3 ohm and 6 ohm in series. Find:
(i) The current through the battery,
(ii) The p.d. between the terminals of the battery.
A current of 0.3 A is flowing through a branch of 6 Ω resistors in a junction as shown in fig. . Calculate the
(a) P.d. across the junction XY,
(b) Current flowing through 9Ω and 24Ω
( c) P.d. across 24 Ω resistor, and
( d) e.m.f. of the cell.
Fill in the blank :
1 mA = ............................. A.
In current electricity, a positive charge refers to ______.
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 |
For current to flow, one needs art open circuit.
