Question

study the following electric circuit and find the (i) the current following in the circuit and (ii) the potential difference across the 10 ohm resistor​

Answer 1

R = R1 + R2 = 10 + 20 = 30Ω

V = 3 V

(i) From ohm's law V = IR

3 = I × 30 ⇒ I = 3 / 30 = 1 / 10 Ampere or 0.1 A

(ii) Potential difference across 10Ω resistor

V = IR

= 1 / 10 = 1 volt.

hope helps

Answer 2

Given: the resistors have 10Ω and 20Ω. The potential difference applies is 3V.

To find: (i) current (ii) potential difference across 10Ω resistor.

Step-by-step method:

Step 1 of 2

The resistors are connected in series so the total resistance will be:

$R_{T} =10+20=30ohm$

According to ohm's law, $V=IR$.

Substituting the values we will get,

$I=\frac{3}{30}\\ I=0.1A$

Step 2 of 2

The potential difference across 10Ω resistor will be:

$V=0.1*10\\V=1V$

(i) Current in circuit is 0.1A.

(ii) The potential difference across 10Ω resistor is 1V.