LON-CAPA Assuming × + /sc/gblanpied/co section: Y01) Robert Heathcott (Student -

Question

LON-CAPA Assuming × + /sc/gblanpied/co section: Y01) Robert Heathcott (Student - Main Menu | Course Contents | 2017 Fall, PHYS 212 (cook) Courses Help » Hw 5 . Ch26&ch27; » Assuming no Notes 2.40 V and internal resistance R-0.400 is driving a motor. The motor is lifting a 2.0 N mass atconstant speed Course Contents» Communicate Print Info Evaluate (8c27p110)A battery of - v 0.50 m/s. Assuming no energy losses, find the current i in the circuit. Enter the lower current. Tries 0/10 Enter the higher current. Tries 0/10 Submit Find the potential difference V across the terminals of the motor for the lower current Tries 0/10 Find the potential difference V across the terminals of the motor for the higher current. Submit Answer Tries 0/10 Discuss the fact that there are two solutions to this problem Thi Send Feedback is discussion is closed

Explanation / Answer

a)

i2 R = Fv

i2 (0.4) = 2 (0.5)

i = 1.6 A

i = current

using ohm's law

i = E/R = 2.4/0.4 = 6 A

Vlower = ilower R = 1.6 x 0.4 = 0.64 Volts

Vhigh = ihigh R = 6 x 0.4 = 2.4 Volts

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