Advertisements
Advertisements
प्रश्न
Are the lights in your house wired in series?
Advertisements
उत्तर
No, the lights in the house are wired in parallel.
APPEARS IN
संबंधित प्रश्न
Complete the following :-
(c)

Show how you would connect two 4 ohm resistors to produce a combined resistance of (a) 2 ohms (b) 8 ohms.
A 4 Ω coil and a 2 Ω coil are connected in parallel. What is their combined resistance? A total current of 3 A passes through the coils. What current passes through the 2 Ω coil?
Two resistances when connected in parallel give resultant value of 2 ohm; when connected in series the value becomes 9 ohm. Calculate the value of each resistance.
How will you connect three resistors of resistances 2 Ω, 3 Ω, and 6 Ω to obtain a total resistance of 4 Ω, and 1 Ω?
State how are the two resistors joined with a battery when potential difference is same across each resistor.
Calculate the equivalent resistance between the points A and B in Fig. if each resistance is 2·0 Ω.

What is the equivalent resistance of 5 equal resistors, each of value 2`Omega` 1 when oonnected in (a) Series ( b) ParaIleI?
A battery of e.m.f. 15 V and internal resistance 2 `Omega` is connected to two resistors of 4 ohm and 6 ohm joined.
(i) In series,
(ii) In parallel.
Find in each case the electrical energy spent per minute in 6 ohm resistor.
Show how would you connect three resistors, each of resistance 6 O so that
the combination has a resistance of(a) 9 Ω (b) 4 .Ω
Explain, why is the p.d. between the terminals of a storage battery less when it is supplying current than when it is on open circuit. A battery of e.m.f. 10 volts and internal resistance 2.5 ohms has two resistances of 50 ohms each connected to it. Calculate the power dissipated in each resistance
(a) When they are in series,
(b) When they are in parallel.
In each case calculate the power dissipated in the battery.
A particular resistance wire has a resistance of 3 ohm per meter. Find the potential difference of the battery which gives a current of 2 A in each of the 1.5 m length when connected in the parallel to the battery (assume that resistance of the battery is negligible).
How does the resistance of a metallic wire depend on the thickness of wire?
A given wire is stretched to double its length. How will its resistance change?
Calculate equivalent resistance in the following cases:


Two devices are connected between two points say A and B in parallel. The physical quantity that will remain the same between the two points is:
The least resistance obtained by using 2 Ω, 4 Ω, 1 Ω and 100 Ω is:
Assertion: When a battery is short circuited, the terminal voltage is zero.
Reason: In a short circuit, the current is zero.
Four resistors each of resistance 5 Ω are connected in parallel. What is the effective resistance?
