Question

Find the current I passing through and the voltage across each of the resistors in the circuit below.

100 400
7 v​

Answer 1

Answer:

I = 0.01A

Explanation:

The value of the resisitors and the voltage is given.

R = R1+R2+R3

   = 100+400+200 = 700Ω

By Ohm's Law,

      I = V/R = 7/700 = 1/100

                              I = 0.01 A

There's your answer ;)

Answer 2

Concept:

The relationship between electric current and potential difference is stated by Ohm's law. Most conductors' current is directly inversely proportional to the voltage applied to them. German physicist Georg Simon Ohm was the first to empirically confirm Ohm's law. This current-voltage relationship is denoted mathematically by V = IR.

Given:

R1 = 100 Ω

R2 = 400 Ω

R3 = 200 Ω

V = 7V

Find:

We have to find the current I passing through and the voltage across each of the resistors in the circuit below.

Solution:

As the circuit has given resistors in series,

R = R1 + R2 + R3

R = (100 + 400 + 200) Ω

R = 700 Ω

Applying Ohm's law we have,

V = IR

I = V/R

I = 7/700

I = 0.01 A

Hence, the current passing through and the voltage across each of the resistors is 0.01 A.

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