Help with these questions please?

Posted on 2016-04-14 18:26:00 in Engineering by SCOTT

2) Current is defined as? 
A. The opposition to the flow of electric charges in a circuit 
B. The rate of flow of electric charges in a current 
C. The difference in electrical energy between two points on a circuit 
D. A device for opening and closing an electric circuit 

3) According to Ohm’s law: 
A. Current is proportional to voltage 
B. Resistance is proportional to voltage 
C. Current is proportional to resistance 
D. Voltage is proportional to resistance 

4) According to Ohm’s law, and assuming that resistance is fixed: 
A. Decreasing the voltage will increase the current flowing in a circuit 
B. Increasing the voltage will decrease the current flowing in the circuit 
C. Increasing the voltage will increase the current flowing in the circuit 
D. Decreasing the voltage will not affect the current flowing in the circuit 

6) In an alternating current circuit (AC)…. 
A. Voltage oscillates with time and current is constant 
B. Voltage is constant and current oscillates with time 
C. Voltage and current are both constant with time 
D. Voltage and current both oscillate with time 

7) When distributing electric power over long distances, it is more efficient to maintain low voltage. True or false? 

8) Electricity is transmitted over long distance using voltages in the range of? 
A. 1-5 V 
B. 10-50 V 
C. 100-500 V 
D. 100-500 kV 

9) Since a fridge has a motor, you would expect it to operate on DC voltage. True or False?

---

Answer Comment

No Answers Posted Yet.