Question

Q (1) two resister of resistance 3 ohm and 6 ohm respectively are connected to battery of 6 volt to find maximum resistance and minimum resitance ?? 
(2) calculate the strength of current in both casses ?

Answer 1

Maximum resistance is obtained when resistor are connected in parallel..

R = 3 + 6 = 9 ohm. is the maximum resistance obtained by combination.

Minimum resistance is obtained by connecting the resistor in parallel..

1/R = 1 / 3 + 1 / 6 = 2 + 1 / 6 ( LCM of 3 and 6 is 6)

1 / R = 3/6 = 1 /2

R = 2 ohm. is the minimum resistance obtained by combination.

2)

Strength of the current in maximum resistance.

I = V / R = 6 / 9 = 2 / 3 amp.

strength of the current in minimum resistance.

I = V / R = 6 / 2 = 3ohm.