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
What are the advantages of connecting electrical devices in parallel with the battery instead of connecting them in series?
Find the current in each resistor in the circuit shown below:
A resistor of 8 ohms is connected in parallel with another resistor X. The resultant resistance of the combination is 4.8 ohms. What is the value of the resistor X?
You are given three resistances of 1, 2 and 3 ohms. Shows by diagrams, how with the help of these resistances you can get:
(i) 6 Ω
(ii) `6/1` Ω
(iii) 1.5 Ω
State how are the two resistors joined with a battery when equivalent resistance is less than either of the two resistances.
In parallel combination of resistances ______.
You have three resistors of values 2Ω, 3Ω and 5Ω. How will you join them so that the total resistance is less than 1Ω? Draw diagram and find the total resistance.
Calculate the equivalent resistance between the points A and B in Fig. if each resistance is 2·0 Ω.
A uniform wire with a resistance of 27 Ω is divided into three equal pieces and then they are joined in parallel. Find the equivalent resistance of the parallel combination.
What are the advantages of a parallel connection?
Tick (✓) the correct choice among the following :
Consider two cases of two parallel current carrying conductors. Current in
th e same direction and currents in th e opposi te directions will produce
State the S.I. unit of electrical resistance and define it.
How does the resistance of a metallic wire depend on the length of wire?
What connection is used in domestic appliances and why?
Two resistors when connected in parallel give the resultant resistance of 2 ohms, but when connected in series the effective resistance becomes 9 ohms. Calculate the value of each resistance.
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:
Assertion: When a battery is short circuited, the terminal voltage is zero.
Reason: In a short circuit, the current is zero.
The diagram above is a schematic diagram of a household circuit. The house shown in the above diagram has 5 usable spaces where electrical connections are made. For this house, the mains have a voltage of 220 V and the net current coming from the mains is 22A.
- What is the mode of connection to all the spaces in the house from the mains?
- The spaces 5 and 4 have the same resistance and spaces 3 and 2 have respective resistances of 20Ω and 30Ω. Space 1 has a resistance double that of space 5. What is the net resistance for space 5.
- What is the current in space 3?
- What should be placed between the main connection and the rest of the house’s electrical appliances to save them from accidental high electric current?
Two V-I graphs A and B for series and parallel combinations of two resistors are as shown. Giving reason state which graph shows (a) series, (b) parallel combination of the resistors.
