Question

suppose a 6 volt battery is connected across a lamp if the current in the circuit is 0.25A calculate the value of the resistance from the resistor which must be used

Answer 1

Resistance = Potential difference/Electric Current = 6 V / 0.25 Ampere = 24 ohms

Answer 2

I=V/R
so, R=V/I=6/0.25=24ohm