Answered

Find the current resulting from 3.5 V in a circuit with a net resistance of 3.6 Ω.


0.97 A

1.0 A

3.4 A

13 A


When you turn on the radio in your car, it has a resistance of 4.0 Ω. What battery voltage is required to supply 3.0 A of current to the radio?


0.75 V

1.3 V

  1. V

12 V


What is the resistance of an operating laptop computer that has an 11 V battery and consumes 15 W of power?


1.36 Ω

8.1 Ω

  1. Ω

170 Ω


What is the power of a 3.7 V cell phone battery that provides 2.0 A of current?


0.54 W

1.1 W

1.9 W

7.4 W

Verified Answer :

1.1 w is the answer for the last one

1) We know, I = V/R
I = 3.5 / 3.6 = 0.97 A

2) We know, V = R I
V = 4 3 = 12 V

3) We know, R = V²/P
R = 11²/15 = 121/15 = 8.1 Ohm

4) We know, P = V I
P = 3.7 2 = 7.4 watts

In short, Your Answers are:
1)Option A
2)Option D
3)Option B
4)Option D

Hope this helps!

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