Download Grade 9 Applied Science

Grade 9 Applied Science
Electrical Circuits
Teacher Resource Centre DVD8705
Pre-DVD
 Circle the best answer for the following questions
1. In a PARALLEL CIRCUIT, different parts of the circuit are on…
a. Third prong
b. Electrical current
c. Fuses
d. Separate braches
2. An unintended path that allows current to BYPASS the loads in the circuit
a. Long circuit
b. Series circuit
c. Short circuit
d. Parallel circuit
3. The simplest electric circuit consists of a source of energy, a load and…
a. Electric circuit
b. Flow
c. Voltage
d. Fuse
4. What is created when charges flow through a wire?
a. Short circuit
b. Static electricity
c. Electric current
d. Lightning
5. The greater the POTENTIAL DIFFERENCE, the greater the…
a. Circuit breaker
b. Short circuit
c. Resistance
d. Voltage
6. Electric current will not flow if the circuit is…
a. Open
b. Long
c. Parallel
d. Closed
7. Another term for load is…
a. Resistance
b. Current
c. Ohm
d. Volt
8. What is the symbol for OHMS (Unit of Measurement of RESISTANCE)?
a. V
b. W
c. Ω
d. A
9. If all loads are arranged on one path of electric current, the path is called…
a. Parallel
b. Long
c. Series
d. Short
10. In a PARALLEL circuit when one light goes out, the other lights…
a. Go out
b. Glow brighter
c. Glow duller
d. No change
11. For a circuit to be CLOSED, the switch must be…
a. Open
b. Removed
c. Present
d. Closed
12. What is the UNIT OF MEASUREMENT OF CURRENT?
a. Ohms
b. Volts
c. Power
d. Amps
13. Fuses shut off electric current when the current gets too….
a. Fast
b. Long
c. Hot
d. Short
14. In an electrical circuit, VOLTAGE is the…
a. Force
b. Flow
c. Load
d. Resistance
15. In a SERIES circuit when one light goes out, the other lights…
a. Go out
b. Glow brighter
c. Glow duller
d. No change
12. What is an ELECTRIC CIRCUIT?
13. What is the DIFFERENCE between a SERIES CIRCUIT and a PARALLEL CIRCUIT?
14. How do you think a FUSE works?
Grade 9 Applied Science
Electrical Circuits
Teacher Resource Centre DVD8705
Answers
Pre-DVD
 Circle the best answer for the following questions
1. In a PARALLEL CIRCUIT, different parts of the circuit are on…
a. Third prong
b. Electrical current
c. Fuses
d. Separate braches
2. An unintended path that allows current to BYPASS the loads in the circuit
a. Long circuit
b. Series circuit
c. Short circuit
d. Parallel circuit
3. The simplest electric circuit consists of a source of energy, a load and…
a. Electric circuit
b. Flow
c. Voltage
d. Fuse
4. What is created when charges flow through a wire?
a. Short circuit
b. Static electricity
c. Electric current
d. Lightning
5. The greater the POTENTIAL DIFFERENCE, the greater the…
a. Circuit breaker
b. Short circuit
c. Resistance
d. Voltage
6. Electric current will not flow if the circuit is…
a. Open
b. Long
c. Parallel
d. Closed
7. Another term for load is…
a. Resistance
b. Current
c. Ohm
d. Volt
8. What is the symbol for OHMS (Unit of Measurement of RESISTANCE)?
a. V
b. W
c. Ω
d. A
9. If all loads are arranged on one path of electric current, the path is called…
a. Parallel
b. Long
c. Series
d. Short
10. In a PARALLEL circuit when one light goes out, the other lights…
a. Go out
b. Glow brighter
c. Glow duller
d. No change
11. For a circuit to be CLOSED, the switch must be…
a. Open
b. Removed
c. Present
d. Closed
12. What is the UNIT OF MEASUREMENT OF CURRENT?
a. Ohms
b. Volts
c. Power
d. Amps
13. Fuses shut off electric current when the current gets too….
a. Fast
b. Long
c. Hot
d. Short
14. In an electrical circuit, VOLTAGE is the…
a. Force
b. Flow
c. Load
d. Resistance
15. In a SERIES circuit when one light goes out, the other lights…
a. Go out
b. Glow brighter
c. Glow duller
d. No change
12. What is an ELECTRIC CIRCUIT?
The flow of electric charges through a material
13. What is the DIFFERENCE between a SERIES CIRCUIT and a PARALLEL CIRCUIT?
Series – All parts connected on one path
Parallel – Parts are on separate paths
14. How do you think a FUSE works?
Metal in the fuse melts when it becomes too hot…making an open circuit and stopping the
flow of energy