Advertisements
Advertisements
प्रश्न
Two resistors of resistance 2 Ω and 3 Ω are connected in parallel to a cell to draw current 0.5 A from the cell. Calculate the current in each resistor.
Advertisements
उत्तर
If i is the current through 2 Ω resistance, then (0.5 - i) is the current through 3 Ω resistance.
∴ i × 2 = (0.5 - i) × 3 ∵ p.d. is same
2i = 1.5 - 3i
2i + 3i = 1.5
5i = 1.5
i = 0.3 A
∴ current through 2 Ω resistance = 0.3 A and
current through 3 Ω resistance = 0.5 – 0.3 = 0.2 A
APPEARS IN
संबंधित प्रश्न
Several electric bulbs designed to be used on a 220 V electric supply line are rated 10 W. How many lamps can be connected in parallel with each other across the two wires of 220 V line if the maximum allowable current is 5 A?
The figure given below shows three resistors?
Their combined resistance is:
(a) `1 5/7`Ω
(b) `14` Ω
(c) `6 2/3` Ω
(d) `7 1/2` Ω
If current flows through two lamps arranged:
(a) in series,
(b) in parallel,
and the filament of one lamps breaks, what happens to the other lamp? Explain your answer.
State how are the two resistors joined with a battery when equivalent resistance is less than either of the two resistances.
State how are the two resistors joined with a battery when potential difference is same across each resistor.
Two resistors of resistance 4 Ω and 6 Ω are connected in parallel to a cell to draw 0.5 A current from the cell.
Draw a labeled diagram of the arrangement
The equivalent resistance of a parallel combination of two resistors of 30 Ω and 60 Ω is ______________.
Calculate the current flows through the 10 Ω resistor in the following circuit.

A coil in the heater consumes power P on passing current. If it is cut into halves and joined in parallel, it will consume power:
Study the following circuit:

On the basis of this circuit, answer the following questions:
i. Find the value of total resistance between the points A and B.
ii. Find the resistance between the points B and C.
iii. Calculate the current drawn from the battery, when the key is closed
OR
iii. In the above circuit, the 16Ω resistor or the parallel combination of two resistors of 8 Ω, which one of the two will have more potential difference across its two ends? Justify your answer.
