Question

For given circuit , the current is 5a with resistors R1=4Ω, R2= 2Ω, R3= 1Ω. Determine equivalent resistance and voltage applied.

Answer 1

Answer:where is circuit??

Explanation:

Answer 2

Answer:

In series: equivalent Resistance: 7Ω

: Voltage: 35V

In parallel: equivalent Resistance: 4/7Ω

: Voltage: 2.85V

Explanation:

If in series connection- add all the resistances:

R1+R2+R3=Equivalent Resistance

4+2+1=7Ω(equivalent resistance)

Voltage : I * R (according to ohm's law)

5 * 7 = 35V

If in parallel connection:

1/R = 1/R1 + 1/R2 + 1/R3

= 1/4 + 1/2 + 1/1

= 1 + 2 + 4/4

=7/4Ω

therefore 1/ R= 7/4

R = 4/7Ω

Voltage:  I * R (according to ohm's law)

4/7  * 5 = 20/7V

in simplified form: 2.85V

Hope this helps:)