Figure P2.6 is 6 V ais 15 mA

Q2.The periodic triangular current in shown in Figure 1 has a peak value of 180 mA. Find the average power that this current delivers to a resistor. etc. -Ty2 -T/4 T/4 T2 3T/4 /T -I Figure 1

3 A subway car draws power from a sliding contact on a third rail at 750 V. The motors require up to 500 kW total in severe situations. How much current must the sliding contact be rated for? If it is desired to lose less than 1 kW (0.2%) in the sliding contact, what is the maximum allowed value of contact resistance?

1. According to KVL, the voltage supplied to a closed circuit is equal to: A. The sum of the resistances in the circuit B. OV C. The power dropped across the loads in the circuit D. The sum of the voltage drops across the loads 2. Which of the following is NOT a true statement regarding Kirchhoff's Voltage Law? A. It helps us determine unknown values at desired points in a circuit B. It is often used in combination with Ohm's Law C. It states that zero voltage can be dropped in a circuit D. It is based on the principle of the conservation of energy 3. Two circuit elements are in series when: A. They have only one common terminal B. They are connected in alphabetical order C. They have more than one common terminal D. They have the same voltage drop 4. True or false: Current is the same through all points in a series circuit. A. True B. False 5. A voltage divider receives an input voltage of 9V. If the two series resistors in the divider have the same resistance, what will the output…