What is the value of the resistance if a 6 volt battery is connected across a resistor, and a current of 1.5A flows in the resistor?
Circuit diagram shows that resistors 2Ω, 4Ω and RΩ connected to a battery of e.m.f. 2 V and internal resistance 3Ω. A main current of 0.25 A flows through the circuit. What is the p.d. across the 4Ω resistor?
Two resistors A and B resistance 4 Ω and 6Ω respectively are connected in parallel. The combination is connected across a 6 volt battery of negligible resistance. Calculate : (i) the power supplied by the battery, and (ii) the power dissipated in each resistor.