CURRENT ELECTRICITY 2

The internal resistance of a cell is the resistance of

• Material used in the cell

• Electrolyte used in the cell

• Electrodes of the cell

• vessel of the cell

The amount of charge flowing through a cross-sectional area of a wire per unit of time is called:

• Voltage

• Power

• Resistance

• Work

• Current

Two resistors R1 = 6 Ω and R2 = 12 Ω are connected in parallel to each other and in series to R3 = 2 Ω. An ammeter measures an electric current of 3 A flowing though resistor R3. What is the net voltage applied to the circuit?

• 6 V

• 12 V

• 18 V

• 24 V

6. Three resistors: R1 = 5 Ω,R2 = 3 Ω, and R3 = 4 Ω are connected in series to each other. A voltmeter connected in parallel to resistor R2 measures voltage of 6 V. What is the net voltage in the circuit?

• 24 V

• 20 V

• 16 V

• 12 V

The conductance of a 923Ω resistance is

• 1.08 * 10-3 mho

• 1.08 * 10-4 mho

• 1.02 * 10-3 mho

• 1.02 * 10-4 mho

The algebraic sum of voltages around any closed path in a network is equal to ____________

• Infinity

• 1

• 0

• Negative Polarity

Calculate potential difference between x and y

• 4.275 V

• -4.275 V

• 4.527 V

• -4.527 V

Find R

• 17.5 Ω

• 17.2 Ω

• 17.4Ω

• 17.8 Ω

. A 12-Volt battery would supply ___.

• 3 Coulombs of charge with 4 Joules of energy

• 4 Coulombs of charge with 3 Joules of energy

• 12 Coulombs of charge with 1 Joule of energy

• 1 Coulomb of charge with 12 Joules of energy

The drift velocity of mobile charge carriers in electric circuits is ____.

• very fast; less than but very close to the speed of light

• fast; faster than the fastest car but nowhere near the speed of light

• slow; slower than Michael Jackson runs the 220-meters

• very slow; slower than a snail