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U Question 19 O pts 1) A 50 A current flows through the leads of an electrical appliance (al Calculate how much charge passes through the appliance in 10 min. (b) How many electrons are in that amount of charge. 11) A 500 and a 200 resistor are connected in series with an ideal battery that has an emf of 20 V. (a) What current flows through each resistor? (b) What power is delivered to each resistor? (c) What power is supplied by the battery Upload Choose a File

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Answer 1

Answex 19) lis Given : 5 A t 10 min - 108.60 60 5 .. Charge; q? тхь 5 x 60 (* 1.9 300C ne (ir) According to quantisation of charge: q = q 300 = No. of electrons; n = е. 106 x 10-19 21 1-875 X 10 electrons 20) Given; ma 5x10-kg- ty q 2 -8 3.5 X 10 C 5 IV - B 2 x 10 mls. v.1 ♡ +x v = (2 x 105 m/s) j B = (0.87)(-k) -4

a) Thus: V XB 2 x 10 105 x x 0.8 C Š x tk) 106 x 10(-2) .. Magnetic foru; q(V x B) IF. 3.5*10*(1-610') F -3 5.6810 N Direction along negative z-axis ( -x axis) B) According to Newton's second law of motion F Fma m. Acceleration, a -3 5.6 x 10 3 5 x 10 1-12 mis? Direction along -7 direction. 21) (i) Given; la Oilnm 0.1 x10 m. 3x108 m/s. Frequency; с 3x108 0 x 10 v -9 16 3X10 Hz (ii) Given; Angle of incidenu; iz 30 Angle of refraction; r = 45 on watch 1.33 noil ·? Oil 30° According to Snells law: 1450 Watei sin i nwater sin Y noit

sin 08 To 33 sin 45 noir > Refractive index of oil ག་ན་ noir 1033 X Krogte wis sin 30 n oil = 1.88