<p>(a) Three resistors&nbsp;<math xmlns="http://www.w3.org/1998/Math/MathML"><msub><mi>R</mi><mn>1</mn></msub><mo>,</mo><mo>&#160;</mo><msub><mi>R</mi><mn>2</mn></msub><mo>,</mo><mo>&#160;</mo><msub><mi>R</mi><mn>3</mn></msub></math>&nbsp;are connected in parallel, and the combination is connected to a battery, an ammeter, a voltmeter, and a key. Draw suitable circuit diagram to show the arrangement of these circuit components along with the direction of current flowing.</p>

<p>(b) Calculate the equivalent resistance of the following network:</p>

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