Question

last question help me pls​

Answer 1

Answer:

0.67A

Explanation:

According to Ohm’s law

V= IR

Therefore, I= V/R

Where,

R is the equivalent resistance of resistances 0.2 Ohm, 0.3 Ohm, 0.4Ohm, 0.5 Ohm and 12 Ohm.

These are connected in series.

Hence, the sum of the resistances will give the value of R.

R=  R1 + R2 + R3 + R4 + R5

= 0.2 + 0.3 + 0.4 + 0.5 + 12 = 13.4 Ohm

The potential difference, V= 9 V

I = 9/13.4 = 0.671 A

When resistors are connected in series, the current is the same in all the resistors. Hence, current in 12 Ω resistor = 0.67 A.

Answer 2

Ans. Since all the resistors are connected in series, equivalent resistance of the combination is R = 0.2+0.3+0.4+0.5+12 = 13.4 ohm

Hence, current through the 12 ohm ( since all the resistors are in series ) resistor is

I= V/R = 9/13.4 = 0.67 Ampere

Done.