1. • is an electrical instrument used to measure potential difference or voltage. To get the measurement, it is connected in 2. Voltage source and terminal voltage can be related as [Choose any one answer] 3. A constant current source supplies a electric current of 200 mA to a load of 2k. When the load changed to 1000, the load current will be 4. Internal reșistance of cell when there is current of 0.40A when a battery of 6.0V is connected to a resistor of 14.50 is

5. Four resistors are connected to a battery as shown in the figure below. ww R₂=2R R₁ = R R₁=3R R₂ = 4R www (a) Determine the potential difference across each resistor in terms of . (b) Determine the current in each resistor in terms of I. (c) If R3 is increased, explain what happens to the current in each of the resistors. (d) In the limit that R3 →∞, what are the new values of the current in each resistor in terms of I, the original current in the battery?

2a) What is the equivalent resistance if all three resistors are connected in parallel across the 12 Volt battery? 2b) What is the current through the battery when the 2c) What is the current through the 20 resistor resistors are connected in parallel? when the resistors are connected in paralleľ?

Question 16

[Q8] A length of copper wire has resistance of 0.172 and a cross sectional area of 7.85 × 10-5 m². The resistivity of copper is 1.72 x 10-8 · m. What is the length of this piece of wire? 873 m. 250 m. C. 78.5 m. d. 785 m. e. 6,570 m. f. None of the above a. b.

Determine the work done by a 12 V battery supplied 20 mA current through a conductor for  two hours. How much heat transferred by the battery.