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The figure shows a circuit. When the c...

The figure shows a circuit.
When the circuit is switched on, the ammeter reads 0.5A.

Calculate the value of the unknown resistor R.

Text Solution

Verified by Experts

We know, V = IR.
`rArr6=0.5xxR.`
`rArrR.=12Omega`
`becauseR.=3+R`
`rArr12=3+R`
`thereforeR=9Omega`
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