both questions in 15 mins thank you An all metal cart is on apair of rails 0.5 m

Question

both questions in 15 mins thank you

An all metal cart is on apair of rails 0.5 m apart. The rails are connected to a & volt batbery and have a resistance of 5.5 ohms. What is the velocity of the cart when the cument in the rails is 0,581818 A und the B- field of 1.5 Tesla is pointing vertically? A) 2.75 N B) 0.727N C) 8.25N D) 6.4 m's E) 0.92 N niezoFsrada, respectively, are oonnected in TwO parallel. The parallei combination is then connected in series to - 8 capacitor. The systen is connected to a 90 V battery, what charge aceunalates on the 4 Ecs Pactor? A) 1080uc B) 198.6 pC C) 112 uc D) 30uc E) 360pc

Explanation / Answer

Question 1

net current=(V-Bvl)/R=0.581818

(8-1.5*v*0.5)/5.5=0.581818

we got v=6.4 m/s

option (D) is correct

Question 2

If in parallel,net capacitance=4+2.5=6.5 uF

now connected to 8 uF in series

net capacitor=(8*6.5)/14.5=3.59 uF

charge across circuit =CV=322.76 uC

charge across 4 uF=(4/6.5)*322.7=198.6 uC

option (B) is correct

Please rate the answer if correct.Thank you

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