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When a 12 V battery is connected across ...

When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of resistor?

Text Solution

Verified by Experts

We know,
`R=(V)/(I)` (By Ohm.s law)
V = 12 volts, `I=2.5 mA = 2.5 xx 10^(-3)A`
`:.R=(12)/(2.5 xx 10^(-3))Omega=(12 xx 10^(3))/(2.5)Omega`
`R=4.8xx10^(3)Omega`
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