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A P.D. of 6 V is Applied to Two Resistors of 3 ω and 6 ω Connected in Parallel. Calculate: (A) the Combined Resistance (B) the Current Flowing in the Main Circuit (C) the Current Flowing in the 3 ω Resistor. - Science

A p.d. of 6 V is applied to two resistors of 3 Ω and 6 Ω connected in parallel. Calculate:

(a) the combined resistance
(b) the current flowing in the main circuit
(c) the current flowing in the 3 Ω resistor. 

  

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Solution

(a) The resistors of 3 Ω and 6 Ω are connected in parallel. Therefore, their net resistance can be calculated as:
1/R = 1/R1 + 1/R2
 Here, R1 = 3 Ώ
          R2 = 6 Ώ
So:
1/R = (1/3) + (1/6)
1/R = (2 + 1)/6
1/R = 3/6
R = 2 Ω

(b) The current flowing through the main circuit,
I = V/R
I = 6/2 A
I = 3 A

(c) The current flowing in the 3 Ω resistor,
I = V/R
I = 6/3 = 2 A

  Is there an error in this question or solution?
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APPEARS IN

Lakhmir Singh Class 10 Physics (Science)
Chapter 1 Electricity
Q 26
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