Advertisements
Advertisements
प्रश्न
Give three reasons why different electrical appliances in a domestic circuit are connected in parallel.
Advertisements
उत्तर
Three reasons why a parallel circuit is used in domestic wiring:
(a) A parallel circuit has a low resistance.
(b) It prevents unequal power supply as opposed to a series circuit.
(c) If one device in the series is damaged, it does not affect the other devices.
APPEARS IN
संबंधित प्रश्न
Draw the electrical symbols of the following components and state its use:
Ammeter.
A Radio Set Draws a Current of 0.36 a for 15 Minutes. Calculate the Amount of Electric Charge that Flows Through the Circuit.
In 10 s, charge of 25 C leaves a battery, and 200 J of energy are delivered to an outside circuit a result.
What is the p.d. across the battery?
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
The figure given below shows an electric circuit in which current flows from a 6 V battery through two resistors.
- Are the resistors connected in series with each other or in parallel?
- For each resistors, state the p.d. across it.
- The current flowing from the battery is shared between the two resistors. Which resistor will have bigger share of the current?
- Calculate the effective resistance of the two resistors.
- Calculate the current that flows from the battery.
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.
The diagram shows two ways of connecting three lamps P, Q and R to A.C. supply of 220 V.


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

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

What would be the danger involved in replacing a blown fuse with the one which would carry a large current?
An electric bulb is rated at 220 V, 100 W.
- What is its resistance?
- What safe current can be passed through it?
State whether the following statement is True or False:
The SI unit of charge is the coulomb.
An electrical gadget can give an electric shock to its user under certain circumstances. Mention any two of these circumstances.
The number of electrons constituting a 1-coulomb charge is ______.
