1.

Determine the charge possessed by 20.1x10¹³ electrons. Determine the voltage drop if these electrons traveled 1m m in 1.45ms, through a 10W resistor. (ANS: 32.2mC, 222V)

2.

An electrically neutral material (a cat) acquires a negative charge of 71m C. How many electrons were added to the cat? What would be the voltage drop across your body if the static charge was in contact with you for 31.5ms, if your body has a resistance of 20kW? (ANS: 443x10¹² ELECTRONS, 45100V)

3.

A series circuit has four resistors, which have the following values: R₁ = 10kW, R₂ = 15kW, R₃ = 23kW, and R₄ = 12kW. If theses resistors are connected to a 90V power supply, draw the circuit, calculate the current through R₁, and the voltage drops across each resistor. (ANS: 1.5mA, 15V, 22.5V, 34.5V, 18V)

4.

A series circuit has four resistors, which have the following values: R₁ = 8kW, R₂ = 16kW, R₃ = 24kW, and R₄ = 12kW. The technician left the voltmeter home, and only brought the milliammeter with him. He measures the current through R₂ to be 330mA, calculate the unknown power supply voltage. (ANS: 19800V)

5.

A parallel circuit has four resistors, which have the following values: R₁ = 10kW, R₂ = 15kW, R₃ = 23kW, and R₄ = 12kW. If these resistors are connected to a 5V power supply, draw the circuit, calculate the total current, and the current through each resistor. (ANS: 1.47mA, 0.5mA, 0.33mA, 0.217mA, 0.417mA)

6.

A parallel circuit has four resistors, which have the following values: R₁ = 8kW, R₂ = 16kW, R₃ = 24kW, and R₄ = 12kW. The technician left the voltmeter home, and only brought the milliammeter with him. He measures the current through R₂ to be 330mA, calculate the unknown power supply voltage, and the current through each resistor. (ANS: 5280V, 660mA, 330mA, 220mA, 440mA)