Power in Circuits Video Lessons

Video Thumbnail

Concept

Problem: An automobile starter motor has an equivalent resistance of 0.0500 Ω and is supplied by a 12.0-V battery with a 0.0100-Ω internal resistance. (a) What is the current to the motor? (b) What voltage is applied to it? (c) What power is supplied to the motor? 

FREE Expert Solution

The current of the motor is:

i=εR+r

Voltage in the motor is expressed as:

V=iR

Power is:

P=i2R

80% (445 ratings)
View Complete Written Solution
Problem Details

An automobile starter motor has an equivalent resistance of 0.0500 Ω and is supplied by a 12.0-V battery with a 0.0100-Ω internal resistance. 

(a) What is the current to the motor? 

(b) What voltage is applied to it? 

(c) What power is supplied to the motor? 

Frequently Asked Questions

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Power in Circuits concept. You can view video lessons to learn Power in Circuits. Or if you need more Power in Circuits practice, you can also practice Power in Circuits practice problems.