Electrical current is a product of the power and the voltage difference and is expressed in watts or kilowatts. a. true b. false

Two resistors are connected in with a battery. Would a series or parallel configuration result in the largest current being drawn from the battery? a. parallel b. series c. both are the same. d. it depends on the resistances of the resistors

The unit of electric current, the ampere, is equivalent to which of the following? a. V?Ω b. V/Ω c. Ω?m d. V/s

2. Find v. a) 1.25 V b) 1.0 V 452 +5 M 50 c) 4.25 V 2A ↑ 512 d) 5.00 V e) none of these 2 л 25 4~5 32г 13A M 25 ΤΑ

10. Determine the maximum number of 50 w/100 v light bulbs that can be connected together in parallel so as not to burn out a 15 A fuse when the bulbs are powered by a 75 v source (assume that the resistance of the fuse is negligible). A. 40 B. 30 C. 20 D. 10 TRA

1. Select all of the following that correctly describe what a volt meter and ammeter measure. Select all that apply: A volt meter measures the potential difference (or voltage) across a circuit element. A volt meter measures the potential difference (or voltage) passing through a circuit element. A ammeter measures the electric current passing through a circuit element. A ammeter measures the electric current across a circuit element.

If a certain resistor obeys Ohm's Law, its resistance will change __. a. none of the above b. as the voltage across the resistor changes. c. as the current through the resistor changes. d. as the electric field inside the resistor changes.

5 V 1. For the circuit below, the total current drawn by the circuit is 0.40 A. + a. What is the voltage (in V) across each light bulb? (3) b. Determine the current (in A) in each light (3) bulb. c. What is the equivalent resistance (in 2) of the two branches in parallel? (2) d. What is the total resistance (in 2) of the circuit? (2) R₁ = 7 Ω R₂ = 90 R3 = 130

Which of the following is TRUE about drift velocity?   A. It refers to the fast movement of electrons after introducing potential difference in a circuit.   B. It refers to the amount of current a conductor can hold   C. It refers to the gradual movement of the electrons towards to the other terminal after introducing potential difference in a circuit   D. It refers to the path the current is taking in a circuit

5. Which of the following, if doubled, would have an effect on the current through a conductor? A. The number density (n) of mobile charge carriers B. The drift speed of the mobile charge carriers C. The charge on the mobile charge carriers D. All of the above