Unit 16: Current Electricity + Unit 17: Electric Circuits

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1. In a parallel combination of resistors, the total resistance is:

A Greater than each resistor

B Equal to the largest resistor

C Less than the smallest resistor

D Zero

2. Which of the following is NOT a circuit element?

A Resistor

B Cell

C Wire

D Magnet

3. Which of the following is a source of DC?

A AC generator

B Battery

C Alternator

D Transformer

4. In household wiring, appliances are connected in:

A Series

B Parallel

C Mixed

D Series-parallel

5. Which factor increases electric power?

A Decrease in voltage

B Decrease in current

C Increase in voltage

D Increase in resistance

6. Ohm’s Law states that current through a conductor is directly proportional to:

A Resistance

B Voltage

C Power

D Charge

7. Direct current (DC) flows in:

A Both directions alternately

B One direction only

C Random directions

D Circular paths only

8. A material having very high resistivity is called:

A Conductor

B Semiconductor

C Insulator

D Alloy

9. Resistance increases with increase in:

A Area

B Length

C Temperature (for metals)

D Both B and C

10. A variable resistor is also known as:

A Ammeter

B Rheostat

C Voltmeter

D Fuse

Unit 16: Current Electricity + Unit 17: Electric Circuits

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