A transformer 840 turns of wire in its primary and 660 turns of wire in its...

Question

Question

A transformer 840 turns of wire in its primary and 660 turns of wire in its...

A transformer 840 turns of wire in its primary and 660 turns of wire in its secondary. A voltage V_rms = 120 volts is applied to the primary. A current I_rms = 0.16 A flows into the primary. A light bulb -- acting like an ideal resistor -- is attached to the secondary. What is the resistance of the light bulb ?

	a.	1200 Ω
	b.	460 Ω
	c.	260 Ω
	d.	90 Ω
	e.	950 Ω

science physics

Add a comment Improve this question Transcribed image text

Answer 1

Answer #1

Voltage across secondary

Vs = 660* 120 / 840

Vs = 94.29 V

Current through secondary

Is = 0.16* 840 / 660 = 0.204 A

Using ohm' s law

R = Vs/Is

R = 460 ohm

Comment in case any doubt please rate my answer....

Add a comment

Answer 2

A transformer 840 turns of wire in its primary and 660 turns of wire in its...

Homework Answers

Add Answer to:
A transformer 840 turns of wire in its primary and 660 turns of wire in its...

Post as a guest

Earn Coins

Consider a transformer with 125 turns of wire in the primary winding and 1475 turns of...

An ideal transformer with 5 turns on the primary and 10 turns on the secondary is...

An ideal transformer has 4500. turns in its primary (input) and 14500. turns in its secondary...

An ideal transformer has 4500. turns in its primary (input) and 14500. turns in its secondary...

An ideal transformer with 300 turns in its primary and 500 turns in its secondary has...

A transformer is constructed with 533 turns in the primary coil and 10 turns in the...

A step-down transformer has 83 turns in its primary coil and 24 turns in its secondary...

If a transformer consists of 88 turns in its primary coil, and 3 turns in its...

. An ideal transformer has 600 turns on its primary side and 100 turns on its...

A transformer has 500 turns of wire wrapped around the primary coil and 75 turns of...

A transformer 840 turns of wire in its primary and 660 turns of wire in its...

Homework Answers

Add Answer to: A transformer 840 turns of wire in its primary and 660 turns of wire in its...

Post as a guest

Earn Coins

Add Answer to:
A transformer 840 turns of wire in its primary and 660 turns of wire in its...