Answered

A 3.6-volt battery is used to operate a cell phone

for 5.0 minutes. If the cell phone dissipates

0.064 watt of power during its operation, the

current that passes through the phone is

(1) 0.018 A (3) 19 A

(2) 5.3 A (4) 56 A

Verified Answer :

TaylorBayley

The equation with the values for this one is P = VI, and we know some of the values, so substituting them in:

0.064 = 3.6 x I
I=0.064/3.6
=0.0177 = 0.018A

Explanation :

It is given that,

Potential energy, \(V=3.6\ V\)

Power dissipated,  \(P=0.064\ Watt\)

We know that the power dissipated is given by :

\(P=VI\)

I is the current passing through the phone.

\(I=\dfrac{P}{V}\)

\(I=\dfrac{0.064\ W}{3.6\ V}\)

\(I=0.017\ A\)

or

I = 0.018 A

Hence, the current that passes through the phone is (1) 0.018 A.

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