Question

a)3x-5=4
b) 8t- 12=36
c) 18m-40=22m
d) 5x-40=2-x
e) 20+6x= -2x + 26
f) 9t - 14 = 7t + 20
g) 3(x-2) - ( 1-x ) = 13​

Answer 1

Resposta:

(B) - 160.2 C (C) 16.02 C (D) - 16.02 C 2. A lightning bolt carrying 15,000 A lasts for 100 m s. If the lightning strikes an airplane flying at 2 km, the charge deposited on the plane is (A) 13.33 m C (B) 75 C (C) 1500 m C (D) 1.5 C 3. If 120 C of charge passes through an electric conductor in 60 sec, the current in the conductor is (A) 0.5 A (B) 2 A (C) 3.33 mA (D) 0.3 mA 4. The energy required to move 120 coulomb through 3 V is (A) 25 mJ (B) 360 J (C) 40 Jzn (D) 2.78 mJ 5. i = ? (A) 1 A (B) 2 A (C) 3 A (D) 4 A 6. In the circuit of fig P1.1.6 a charge of 600 C is delivered to the 100 V source in a 1 minute. The value of v 1 must be (A) 240 V (B) 120 V (C) 60 V (D) 30 V 7. In the circuit of the fig P1.1.7, the value of the voltage source E is (A) - 16 V (b) 4 V (C) - 6 V (D) 16 V CHAPTER 1.1 BASIC CONCEPTS Page 3 100 V 60 V v 1 20 W Fig. P.1.1.6 1 A 2 A 5 A 4 A 3 A i Fig. P.1.1.5 2 V 1 V 5 V 10 V 0 V 4 V E – – + + – + – + – + Fig. P.1.1.7 www. circuit graph shown in fig. P1.1.8. Each branch of circuit graph represent a