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Q.

When a hot plate of an electric oven connected to a 220 V line has two resistance coils A and B each of 24 Ωresistance, which may be used separately in series or in parallel .What will be the current when coil is used separately ?


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a

4.25 A

b

9.17 A

c

9.65 A

d

5.50 A 

answer is B.

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Detailed Solution

Given that potential difference , V = 220 V and Resistance = 24 Ω
  Current , I = VR
    I=220 24
   I = 9.17A
Hence, current will be 9.17 A in the circuit.
   
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