B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (A) Find the number of electrons, n, as a function of time if: (1)-121 B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (A)* Direct current in steady state does not vary with time. If a DC current of 5 A flows through a wire, find the charge through the wire with respect to time. The charge at t=0 is 0. B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (A)* In Problem, how many charges flow in 5 s? 2.9 (A)* Direct current in steady state does not vary with time. If a DC current of 5 A flows through a wire, find the charge through the wire with respect to time. The charge at t = 0 is 0. B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (H)* Given that the number of charges measured at 1 is n1 = 2 1019, and the number of charges measured at 2 is, n2 = 5.75 x 1019. Find the current flow if the time interval between 1 and 12 is 2 s, with the assumption that the current, i(t) is a linear function of charges, q(f). B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (H) Application: electroplating A depth of 0.15 mm nickel is required to be coated on a metal surface by electroplating. The nickel density p = 8.8 x 103 kg/m3, the electrochemical equivalent k= 0.304 x 10-6 kg/C (which is the weight of the nickel produced by electrolysis during the flow of a quantity of electricity equal to 1 C), and the current per square meter p = 35 A/m2. How long does it take to achieve the desired coating depth? (Hint: Find the mass of the nickel.) B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (A)* If a current of 3 A flows from a 5 V DC source for 1 s, how much energy, in Joules, is used? B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (H) If 5 x 1016 electrons are pushed by the energy of 15 Joules, what is the voltage? B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (H)* If an alternating current of i(t) = 2 sin (3/2t) flows from a voltage source of v(t) = 5, find the energy used in 1 s. B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (H) 20 J is used from a 2 V source in 4 s. How much current, i, is flowing during this time? B refers to Basic, A refers to Average, H refers to Hard, and * refers to problems with answers. (B)* Use KCL to find 14, 15, and 18 in Figure. FIGURE Image for Problem. SA In the problems below, the asterisk (*) identifies particularly challenging problems. To what base-10 number is each of the following binary numbers equivalent? (a) 1100100 (b) 1111.111 In the problems below, the asterisk (*) identifies particularly challenging problems. Convert the three following base-10 numbers to binary numbers: 5,87, and 20.125. In the problems below, the asterisk (*) identifies particularly challenging problems. Find the sums of the following pairs of binary numbers, and check your answers in the base-10 system: (a) 01111 and 00001 (b) 10001 and 01010 In the problems below, the asterisk (*) identifies particularly challenging problems. Find the sum of the following binary numbers, and check your answer in the base-10 system: 11101, 11011, and 11111. In the problems below, the asterisk (*) identifies particularly challenging problems. Multiply the following binary numbers, and check your answers in the base-10 system: (a) 10101 and 00001 (b) 10101 and 00010 (c) 11111 and 00101