Advertisements
Advertisements
प्रश्न
उत्तर
A/c toOhm's law
R = `"V"/"I"`
Here V = 0.1 volt and I = 2 A
R = `0.1/2` = 0.05Ω
APPEARS IN
संबंधित प्रश्न
In series combination which remains constant?
(a) Voltage
(b) Current
(c) Both current and voltage
(d) Both are variables
Write any two characteristics of a series combination of resistors.
If five resistances, each of value 0.2 ohm, are connected in series, what will be the resultant resistance?
What possible values of resultant resistance one can get by combining two resistances, one of value 2 ohm and the other 6 ohm?
If two resistors of 25 Ω and 15 Ω are joined together in series and then placed in parallel with a 40 Ω resistor, the effective resistance of the combination is :
(a) 0.1 Ω
(b) 10 Ω
(c) 20 Ω
(d)40 Ω
Choose the correct alternative and rewrite the following sentence.
If three resistors 2 ohms, 3 ohms and 4 ohms are connected in series, then the effective resistance in the circuit will be _______ ohms.
Name the material of wire used for making standard resistances. Give a reason.
State expression for Cells connected in parallel.
Illustrate-combination of cells e.g., three cells, in parallel, explaining the combination briefly. Obtain an expression for current ‘i’ in the combination.
In an electrical circuit, two resistors of 2 Ω and 4 Ω respectively are connected in series to a 6 V battery. The heat dissipated by the 4 Ω resistor in 5 s will be ______.