Question

28. If R1, R2, R3, resistors of resistance 7 ohm, 9 ohm, and 4 ohm are connected in series
respectively to a potential difference of 220V. (a) Calculate the total resistance in an
electric circuit. (b) Current in a circuit.​

Answer 1

Requ=7+9+4

Requ=20ohm

total resistance =20 ohm

current I = v/r

I=220/20

I=11amp