Calculate the amount of electric current a charge of 2 C flowing past a given point each second has? А. 1 A B. 0.5 A С. 2 A D. 3 A How many calories does an electric heater of 100 watts generate per second? А. 10 В. 1,000 С. 23.88 D. 1000

26 & 27

11- If the electric potential is 200 V and the electric field is 100 V/m at a certain distance from a point charge, how many meters is this distance?  A) 1/2  B) 2  C) 4  D) 1/4  E) 1

Which of the following pairs of charges produce the highest electrostatic repulsive force? А. +3 C charge 4 m away from another -3 C charge. В. +4 C charge 1 m away from another +4 C charge. C. -5 C charge 2 m away from another -6 C charge. D. +6 C charge 3 m away from another +6 C charge.

4. Resistance of a wire is r ohms. The wire is stretched to double its length, then the resistance in ohms is (a) r/2 (b) 4г 5. The diameter of the nucleus of an atom is of the order of (a) 10³'m (b) 102ºm 6. The mass of the proton is roughly how many times the mass of an electron? (a) 184,000 (b) 18,400 7. The charge of an electron is known to be 1.6 x 10-19 coulomb. In a circuit, the current flowing is 1A. How many electrons will be flowing through the circuit in a second? (а) 1.6 х 10° (b) 1.6 х 1019 8. Two bulbs marked 200 watts-250 volts and 100 watt-250 volts are joined in series to 250 volts supply. Power consumed in circuit is (a) 33 watt (b) 67 watt 9. Ampere second could be the unit of (а) Power (b) Conductance (c) 2r (d) r/4 (c) 102' m (d) 101ªm (c) 1840 (d) 184 (c) 0.625 x 10" (d) 0.625 x 1019 (c) 100 watt (d) 300 watt (c) energy (d) charge

Treat the following questions: 1- Calculate the intensity of the electrical current passing through a device that consumes 20,000 coulomb electrical charges within 10 minutes 2 Calculate the resistance of a copper wire, im long and of 2cm cross-section, knowing that the resistivity of copper p-1.6x10* 3. An electric beater carrying a current of 5A, during 30 minutes under a voltage of 200OV. Calculate: a- The resistance of the electric heater b- The power dissipated due to the heating effect c- The electric energy in kilo watt hour ( KWh) d- The beat energy in joules and in calories + We have 4 resistors connected in series RI= 30 R2= 50 R3= 70 R4= 20 Under a voltage of 20V Calculate: a- Draw the circuit b- The total resistance Reg c- The intensity of current in the circuit d- The voltage at each resistor e- The power dissipated in the circuit

In solar nuclear fusion, each time a proton fuses with another proton, this amount of energy is released   a. 1.44 MeV b. 5.49 MeV c. 26.72 MeV d. 12.86 MeV e. 2 MeV

السؤال Coulomb stated that the force between two very small objects separated in a vacuum or free space by a distance, which is large compared to their size, is proportional to the charge on each and inversely proportional to the square of the distance between them. الاجابات True   False

If you write answer well and readable I will be happy