Question

Find the current in the circuit 20 om, 40om, 120v​

Answer 1

Answer:

2A

Explanation:

Using ohm's law

V=I R

Given V=120

R=20+40=60 ohm

so I =V/R =120/60=2A

Answer 2

Given :-

• Resistance (R) = 20 Ohm and 40 Ohm

• Voltage / Potential difference (V)

= >120 V

TO find :-

The current !

• According to the formula

$\boxed{\sf{ \ \ Voltage = Current \times Resistance }}$

Total Resistance = 2Ohm +40 Ohm

R= 60 Ohm

• Now find the current

$\longmapsto\sf V=I\times R\\ \\ \longmapsto\sf 120 = 60 \times I\\ \\ \longmapsto \sf \cancel{\dfrac{120}{60}}= I\\ \\ \longmapsto\sf 2= I\\ \\ \longmapsto\sf \ \ or \ \ I= 2 \ A$

$\underline{\textsf{\textbf{\dag \ \ Current (I) = 2 \ Ampere }}}$