1.

When a 12V 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 the resistor.

Answer»

Solution :Here, V = 12 V, 1= 2.5 mA ` = 2.5 XX 10^(-3) A, R= ?`
The RESISTANCE of the resistor `R = V/I`
`= 12/(2.5 xx 10^(-3))`
`= 4800 Omega`
`= 4.8 k Omega`


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