Three resistors of 5 Ω are connected in series, and a battery of 10 V is connected to the two end of the series combination of resistors. Calculate the current drawn from the battery. 

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RRB Group D 16 Sept 2022 Shift 3 Official Paper
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  1. 0.57 A
  2. 0.77 A
  3. 0.87 A
  4. 0.67 A

Answer (Detailed Solution Below)

Option 4 : 0.67 A
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Detailed Solution

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The correct answer is 0.67A.

Given:

Three resistors of 5 Ω are connected in series and \(V=10V\)

Formula:

Ohm's law: \(V=IR\)

Calculations:

As the three resistors are connected in series, their equivalent resistance is:

\(Rs=5+5+5=15Ω\)

Now by applying Ohm's law we get:

\(V=IR\)

\(I={V \over R}={10 \over 15}=0.67A\)

Thus, the current flowing is 0.67A.

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