Chapter 14, Problem 14.3P

a)

Interpretation Introduction

Interpretation:

The current (in Amperes) has to be estimated.

Concept Introduction:

Electric current:

The quantity of charge that flows in each second through a circuit is called as electric current. Ampere is the unit of electric current and is expressed as A.

A current of one Ampere tells about a charge of one coulomb per second flowing across a point in a circuit.

To estimate the current (in Amperes)

b)

Interpretation Introduction

Interpretation:

The current has to be estimated with power of $\text{5}{\text{.00×10}}^{\text{2}}\text{W}$ at $\text{115}\text{V}$ and current calculated has to be compared.

Concept Introduction:

Electric current:

The quantity of charge that flows in each second through a circuit is called as electric current. Ampere is the unit of electric current and is expressed as A.

A current of one Ampere tells about a charge of one coulomb per second flowing across a point in a circuit.

To estimate the current (in Amperes)

c)

Interpretation Introduction

Interpretation:

The power output has to be estimated.

Concept Introduction:

Power:

The work done per unit time is called as Power and its expressed in $\text{Watt(W)}$ and also $\text{J/s}$

The equation of Power is written as,

$\text{P=}\frac{\text{work}}{\text{s}}\text{=}\frac{\text{E}\text{.q}}{\text{s}}\text{=E}\frac{\text{q}}{\text{s}}$ P

Since $\text{q/s}$ = current I, then Power is written as,

$\text{P=E}\text{.I}$

To calculate the output power