@12&23Please help me answer this problem.Choose the correct answer from the given choices. NOTE: Show your solutions or answers why you've got or undergone this answer. BOX YOUR FINAL ANSWER. Make sure your answer is in the given choices. State whether the answer is Option A, B, C, or D.Type only your step by step solutions and answers here, do not handwritten. Failure to follow the above reminders and direction will be marked as not helpful. Thank you. 12. A copper wire of diameter 1cm had a resistance of 0.15 Q.It was drawn under pressureso that its diameter wasreduced to 50%. What is thenew resistance of the wire ? *O 3.87 0O 1.220O 0.767 QO 2.4 N 23. A coil of copper wire hasresistance of 90 Q at 20°C andis connected to a 230 V supply.By how much must the voltagebe increased in order tomaintain the current constantif the temperature of the coilrises to 60°C? Take for copperaO = 0.00428/°C. *O 28.6 VO 55.9 VO 40.2 VO 36.3 V

Resistance: It is a material that resists the flow of current and its unit is the ohm.

Answered: 12. A copper wire of diameter 1 cm had…

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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@12&23 Please help me answer this problem. Choose the correct answer from the given choices. NOTE: Show your solutions or answers why you've got or undergone this answer. BOX YOUR FINAL ANSWER. Make sure your answer is in the given choices. State whether the answer is Option A, B, C, or D. Type only your step by step solutions and answers here, do not handwritten. Failure to follow the above reminders and direction will be marked as not helpful. Thank you.

12. A copper wire of diameter 1
cm had a resistance of 0.15 Q.
It was drawn under pressure
so that its diameter was
reduced to 50%. What is the
new resistance of the wire ? *
O 3.87 0
O 1.220
O 0.767 Q
O 2.4 N

23. A coil of copper wire has
resistance of 90 Q at 20°C and
is connected to a 230 V supply.
By how much must the voltage
be increased in order to
maintain the current constant
if the temperature of the coil
rises to 60°C? Take for copper
aO = 0.00428/°C. *
O 28.6 V
O 55.9 V
O 40.2 V
O 36.3 V

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