Advertisements
Advertisements
प्रश्न
Two resistors having 2Ω and 3Ω resistance are connected—(i) in series, and (ii) in parallel. Find the equivalent resistance in each case.
Advertisements
उत्तर
Given: R1 = 2 Ω, R2 = 3 Ω
(i) In series : Equivalent resistance R = R1 + R2
or R = 2 + 3 = 5 Ω
(ii) In parallel : Equivalent resistance R = `("R"_1"R"_2)/("R"_1 + "R"_2)`
or R = `(2 xx 3)/(2 + 3) = 6/5 = 1.2 Omega`
APPEARS IN
संबंधित प्रश्न
Find the equivalent resistance between A and B
State how are the two resistors joined with a battery when equivalent resistance is more than either of the two resistances.
What is the equivalent resistance between A and B in the given circuit (Fig?)
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.
A given metallic wire of resistance R is doubled on itself. What will be its new resistance?
How does the resistivity of a semiconductor depend on temperature?
Two lamps of resistance 30Ω and 20Ω respectively are connected in series in a 110V circuit. Calculate:
(i) the total resistance in the circuit
(ii) the current in the circuit, and
(iii) the voltage drop across each lamp.
Illustrate-combination of cells e.g., three cells, in series, explaining the combination briefly. Obtain an expression for current ‘i’ in the combination.
