Question

3 resistance coil of 1om, 2om and 3om are connected in series. If the combination is connected to 9V battery, what is the potential drop across the coil of 3om?

Answer 1

Equivalent resistance= 1 + 2+ 3 = 6 ohms

current in the circuit, i = v/r = 9/6 = 1.5 amperes

potential difference across resistance 3 ohms = i*r = 1.5 * 3 = 4.5 volts